diff --git a/templates/repo/create.tmpl b/templates/repo/create.tmpl
index ad795387df25..8e4e0c748b32 100644
--- a/templates/repo/create.tmpl
+++ b/templates/repo/create.tmpl
@@ -20,18 +20,18 @@
 							<input type="hidden" id="uid" name="uid" value="{{.ContextUser.ID}}" required>
 							<span class="text" title="{{.ContextUser.Name}}">
 								{{avatar .ContextUser 28 "mini"}}
-								{{.ContextUser.ShortName 20}}
+								{{.ContextUser.ShortName 40}}
 							</span>
 							{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 							<div class="menu">
 								<div class="item" data-value="{{.SignedUser.ID}}" title="{{.SignedUser.Name}}">
 									{{avatar .SignedUser 28 "mini"}}
-									{{.SignedUser.ShortName 20}}
+									{{.SignedUser.ShortName 40}}
 								</div>
 								{{range .Orgs}}
 									<div class="item" data-value="{{.ID}}" title="{{.Name}}">
 										{{avatar . 28 "mini"}}
-										{{.ShortName 20}}
+										{{.ShortName 40}}
 									</div>
 								{{end}}
 							</div>
diff --git a/templates/repo/migrate/git.tmpl b/templates/repo/migrate/git.tmpl
index 7fb8f3d585d9..f200281cbe84 100644
--- a/templates/repo/migrate/git.tmpl
+++ b/templates/repo/migrate/git.tmpl
@@ -49,18 +49,18 @@
 							<input type="hidden" id="uid" name="uid" value="{{.ContextUser.ID}}" required>
 							<span class="text" title="{{.ContextUser.Name}}">
 								{{avatar .ContextUser}}
-								{{.ContextUser.ShortName 20}}
+								{{.ContextUser.ShortName 40}}
 							</span>
 							{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 							<div class="menu" title="{{.SignedUser.Name}}">
 								<div class="item" data-value="{{.SignedUser.ID}}">
 									{{avatar .SignedUser}}
-									{{.SignedUser.ShortName 20}}
+									{{.SignedUser.ShortName 40}}
 								</div>
 								{{range .Orgs}}
 									<div class="item" data-value="{{.ID}}" title="{{.Name}}">
 										{{avatar .}}
-										{{.ShortName 20}}
+										{{.ShortName 40}}
 									</div>
 								{{end}}
 							</div>
diff --git a/templates/repo/migrate/gitea.tmpl b/templates/repo/migrate/gitea.tmpl
index 4ad6e6024fae..a214369f2181 100644
--- a/templates/repo/migrate/gitea.tmpl
+++ b/templates/repo/migrate/gitea.tmpl
@@ -83,18 +83,18 @@
 							<input type="hidden" id="uid" name="uid" value="{{.ContextUser.ID}}" required>
 							<span class="text" title="{{.ContextUser.Name}}">
 								{{avatar .ContextUser}}
-								{{.ContextUser.ShortName 20}}
+								{{.ContextUser.ShortName 40}}
 							</span>
 							{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 							<div class="menu" title="{{.SignedUser.Name}}">
 								<div class="item" data-value="{{.SignedUser.ID}}">
 									{{avatar .SignedUser}}
-									{{.SignedUser.ShortName 20}}
+									{{.SignedUser.ShortName 40}}
 								</div>
 								{{range .Orgs}}
 								<div class="item" data-value="{{.ID}}" title="{{.Name}}">
 									{{avatar .}}
-									{{.ShortName 20}}
+									{{.ShortName 40}}
 								</div>
 								{{end}}
 							</div>
diff --git a/templates/repo/migrate/github.tmpl b/templates/repo/migrate/github.tmpl
index c31444aaef26..c4ca991aca86 100644
--- a/templates/repo/migrate/github.tmpl
+++ b/templates/repo/migrate/github.tmpl
@@ -83,18 +83,18 @@
 							<input type="hidden" id="uid" name="uid" value="{{.ContextUser.ID}}" required>
 							<span class="text" title="{{.ContextUser.Name}}">
 								{{avatar .ContextUser 28 "mini"}}
-								{{.ContextUser.ShortName 20}}
+								{{.ContextUser.ShortName 40}}
 							</span>
 							{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 							<div class="menu" title="{{.SignedUser.Name}}">
 								<div class="item" data-value="{{.SignedUser.ID}}">
 									{{avatar .SignedUser 28 "mini"}}
-									{{.SignedUser.ShortName 20}}
+									{{.SignedUser.ShortName 40}}
 								</div>
 								{{range .Orgs}}
 									<div class="item" data-value="{{.ID}}" title="{{.Name}}">
 										{{avatar . 28 "mini"}}
-										{{.ShortName 20}}
+										{{.ShortName 40}}
 									</div>
 								{{end}}
 							</div>
diff --git a/templates/repo/migrate/gitlab.tmpl b/templates/repo/migrate/gitlab.tmpl
index 823bf25de2f2..bb1e19041d75 100644
--- a/templates/repo/migrate/gitlab.tmpl
+++ b/templates/repo/migrate/gitlab.tmpl
@@ -83,18 +83,18 @@
 							<input type="hidden" id="uid" name="uid" value="{{.ContextUser.ID}}" required>
 							<span class="text" title="{{.ContextUser.Name}}">
 								{{avatar .ContextUser 28 "mini"}}
-								{{.ContextUser.ShortName 20}}
+								{{.ContextUser.ShortName 40}}
 							</span>
 							{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 							<div class="menu" title="{{.SignedUser.Name}}">
 								<div class="item" data-value="{{.SignedUser.ID}}">
 									{{avatar .SignedUser 28 "mini"}}
-									{{.SignedUser.ShortName 20}}
+									{{.SignedUser.ShortName 40}}
 								</div>
 								{{range .Orgs}}
 									<div class="item" data-value="{{.ID}}" title="{{.Name}}">
 										{{avatar . 28 "mini"}}
-										{{.ShortName 20}}
+										{{.ShortName 40}}
 									</div>
 								{{end}}
 							</div>
diff --git a/templates/repo/migrate/gogs.tmpl b/templates/repo/migrate/gogs.tmpl
index dd33fd013893..be66d5079d81 100644
--- a/templates/repo/migrate/gogs.tmpl
+++ b/templates/repo/migrate/gogs.tmpl
@@ -85,18 +85,18 @@
 							<input type="hidden" id="uid" name="uid" value="{{.ContextUser.ID}}" required>
 							<span class="text" title="{{.ContextUser.Name}}">
 								{{avatar .ContextUser}}
-								{{.ContextUser.ShortName 20}}
+								{{.ContextUser.ShortName 40}}
 							</span>
 							{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 							<div class="menu" title="{{.SignedUser.Name}}">
 								<div class="item" data-value="{{.SignedUser.ID}}">
 									{{avatar .SignedUser}}
-									{{.SignedUser.ShortName 20}}
+									{{.SignedUser.ShortName 40}}
 								</div>
 								{{range .Orgs}}
 								<div class="item" data-value="{{.ID}}" title="{{.Name}}">
 									{{avatar .}}
-									{{.ShortName 20}}
+									{{.ShortName 40}}
 								</div>
 								{{end}}
 							</div>
diff --git a/templates/repo/pulls/fork.tmpl b/templates/repo/pulls/fork.tmpl
index 42d9791163eb..d172fc73ccd6 100644
--- a/templates/repo/pulls/fork.tmpl
+++ b/templates/repo/pulls/fork.tmpl
@@ -15,20 +15,20 @@
 							<input type="hidden" id="uid" name="uid" value="{{.ContextUser.ID}}" required>
 							<span class="text" title="{{.ContextUser.Name}}">
 								{{avatar .ContextUser 28 "mini"}}
-								{{.ContextUser.ShortName 20}}
+								{{.ContextUser.ShortName 40}}
 							</span>
 							{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 							<div class="menu">
 								{{if .CanForkToUser}}
 									<div class="item" data-value="{{.SignedUser.ID}}" title="{{.SignedUser.Name}}">
 										{{avatar .SignedUser 28 "mini"}}
-										{{.SignedUser.ShortName 20}}
+										{{.SignedUser.ShortName 40}}
 									</div>
 								{{end}}
 								{{range .Orgs}}
 									<div class="item" data-value="{{.ID}}" title="{{.Name}}">
 										{{avatar . 28 "mini"}}
-										{{.ShortName 20}}
+										{{.ShortName 40}}
 									</div>
 								{{end}}
 							</div>
diff --git a/templates/user/dashboard/navbar.tmpl b/templates/user/dashboard/navbar.tmpl
index 70eb7cce7f1c..c83ffde40a33 100644
--- a/templates/user/dashboard/navbar.tmpl
+++ b/templates/user/dashboard/navbar.tmpl
@@ -4,7 +4,7 @@
 			<div class="ui floating dropdown link jump">
 				<span class="text">
 					{{avatar .ContextUser}}
-					{{.ContextUser.ShortName 20}}
+					{{.ContextUser.ShortName 40}}
 					{{if .ContextUser.IsOrganization}}
 						<span class="org-visibility">
 							{{if .ContextUser.Visibility.IsLimited}}<div class="ui orange tiny horizontal label">{{.i18n.Tr "org.settings.visibility.limited_shortname"}}</div>{{end}}
@@ -20,12 +20,12 @@
 					<div class="scrolling menu items">
 						<a class="{{if eq .ContextUser.ID .SignedUser.ID}}active selected{{end}} item" href="{{AppSubUrl}}/{{if .PageIsIssues}}issues{{else if .PageIsPulls}}pulls{{else if .PageIsMilestonesDashboard}}milestones{{end}}">
 							{{avatar .SignedUser}}
-							{{.SignedUser.ShortName 20}}
+							{{.SignedUser.ShortName 40}}
 						</a>
 						{{range .Orgs}}
 							<a class="{{if eq $.ContextUser.ID .ID}}active selected{{end}} item" title="{{.Name}}" href="{{AppSubUrl}}/org/{{.Name}}/{{if $.PageIsIssues}}issues{{else if $.PageIsPulls}}pulls{{else if $.PageIsMilestonesDashboard}}milestones{{else}}dashboard{{end}}">
 								{{avatar .}}
-								{{.ShortName 20}}
+								{{.ShortName 40}}
 								<span class="org-visibility">
 									{{if .Visibility.IsLimited}}<div class="ui orange tiny horizontal label">{{$.i18n.Tr "org.settings.visibility.limited_shortname"}}</div>{{end}}
 									{{if .Visibility.IsPrivate}}<div class="ui red tiny horizontal label">{{$.i18n.Tr "org.settings.visibility.private_shortname"}}</div>{{end}}
@@ -94,7 +94,7 @@
 				{{end}}
 				<div class="item">
 					<a class="ui blue basic button" href="{{.ContextUser.HomeLink}}" title='{{.i18n.Tr "home.view_home" .ContextUser.Name}}'>
-						{{.i18n.Tr "home.view_home" (.ContextUser.ShortName 20)}}
+						{{.i18n.Tr "home.view_home" (.ContextUser.ShortName 40)}}
 					</a>
 				</div>
 			</div>
diff --git a/templates/user/project.tmpl b/templates/user/project.tmpl
index b444783dbb95..eabed943fe0d 100644
--- a/templates/user/project.tmpl
+++ b/templates/user/project.tmpl
@@ -15,18 +15,18 @@
 							<input type="hidden" id="uid" name="uid" value="{{.ContextUser.ID}}" required>
 							<span class="text" title="{{.ContextUser.Name}}">
 								{{avatar .ContextUser 28 "mini"}}
-								{{.ContextUser.ShortName 20}}
+								{{.ContextUser.ShortName 40}}
 							</span>
 							{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 							<div class="menu">
 								<div class="item" data-value="{{.SignedUser.ID}}" title="{{.SignedUser.Name}}">
 									{{avatar .SignedUser 28 "mini"}}
-									{{.SignedUser.ShortName 20}}
+									{{.SignedUser.ShortName 40}}
 								</div>
 								{{range .Orgs}}
 								<div class="item" data-value="{{.ID}}" title="{{.Name}}">
 									{{avatar . 28 "mini"}}
-									{{.ShortName 20}}
+									{{.ShortName 40}}
 								</div>
 								{{end}}
 							</div>
diff --git a/web_src/less/_base.less b/web_src/less/_base.less
index 6b16143bb169..b5c890fd6114 100644
--- a/web_src/less/_base.less
+++ b/web_src/less/_base.less
@@ -347,6 +347,9 @@ a.muted:hover,
 
 .ui.selection.dropdown .menu > .item {
   border-color: var(--color-secondary);
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
 }
 
 .ui.selection.visible.dropdown > .text:not(.default) {
@@ -387,6 +390,10 @@ a.muted:hover,
 
 .ui.menu .ui.dropdown .menu > .item {
   color: var(--color-text) !important;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  display: block;
 }
 
 .ui.menu .ui.dropdown .menu > .item:hover {
diff --git a/web_src/less/_form.less b/web_src/less/_form.less
index 76c1a06990f6..a4842edd0136 100644
--- a/web_src/less/_form.less
+++ b/web_src/less/_form.less
@@ -278,6 +278,10 @@ textarea:focus,
     form {
       .dropdown .text {
         margin-right: 0 !important;
+
+        white-space: nowrap;
+        overflow: hidden;
+        text-overflow: ellipsis;
       }
 
       .header {