fix

Author: wxiaoguang

routers/web/repo/issue_page_meta.go

@@ -79,6 +79,13 @@ func retrieveRepoIssueMetaData(ctx *context.Context, repo *repo_model.Repository
 		return data
 	}
 
+	// it sets "Branches" template data,
+	// it is used to render the "edit PR target branches" dropdown, and the "branch selector" in the issue's sidebar.
+	PrepareBranchList(ctx)
+	if ctx.Written() {
+		return data
+	}
+
 	data.CanModifyIssueOrPull = ctx.Repo.CanWriteIssuesOrPulls(isPull) && !ctx.Repo.Repository.IsArchived
 	if !data.CanModifyIssueOrPull {
 		return data
@@ -99,11 +106,6 @@ func retrieveRepoIssueMetaData(ctx *context.Context, repo *repo_model.Repository
 		return data
 	}
 
-	PrepareBranchList(ctx)
-	if ctx.Written() {
-		return data
-	}
-
 	ctx.Data["CanCreateIssueDependencies"] = ctx.Repo.CanCreateIssueDependencies(ctx, ctx.Doer, isPull)
 	return data
 }