diff --git a/templates/repo/issue/sidebar/development.tmpl b/templates/repo/issue/sidebar/development.tmpl
index 730d0ecb9a..bfba130c55 100644
--- a/templates/repo/issue/sidebar/development.tmpl
+++ b/templates/repo/issue/sidebar/development.tmpl
@@ -64,7 +64,7 @@
 
 				<div class="required field">
 					<label for="source_repository">{{ctx.Locale.Tr "repo.issues.create_branch_from_repository"}}</label>
-					<div class="ui selection dropdown">
+					<div class="ui selection dropdown ellipsis-items-nowrap">
 						<input type="hidden" name="repo_id" value="{{.Issue.Repo.ID}}">
 						<div class="text">
 							<strong id="repo-branch-current">{{.Issue.Repo.FullName}}</strong>
@@ -72,7 +72,7 @@
 						{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 						<div class="menu">
 							{{range .AllowedRepos}}
-								<div class="item" data-value="{{.ID}}">{{.FullName}}</div>
+								<div class="item" data-value="{{.ID}}" title="{{.FullName}}">{{.FullName}}</div>
 							{{end}}
 						</div>
 					</div>
@@ -80,7 +80,7 @@
 
 				<div class="required field">
 					<label for="source_branch_name">{{ctx.Locale.Tr "repo.issues.base_branch"}}</label>
-					<div class="ui selection dropdown">
+					<div class="ui selection dropdown ellipsis-items-nowrap">
 						<input type="hidden" name="source_branch_name" value="{{.Issue.Repo.DefaultBranch}}">
 						<div class="text">
 							<strong id="repo-branch-current">{{.Issue.Repo.DefaultBranch}}</strong>
@@ -88,7 +88,7 @@
 						{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 						<div class="menu">
 							{{range .Branches}}
-								<div class="item" data-value="{{.}}">{{.}}</div>
+								<div class="item" data-value="{{.}}" title="{{.}}">{{.}}</div>
 							{{end}}
 						</div>
 					</div>