Fixed issue boards loading issues on large screens

Closes #22092

CHANGELOG

@@ -58,6 +58,7 @@ v 8.12.0 (unreleased)
   - Use 'git update-ref' for safer web commits !6130
   - Sort pipelines requested through the API
   - Automatically expand hidden discussions when accessed by a permalink !5585 (Mike Greiling)
+  - Fix issue boards loading on large screens
   - Change pipeline duration to be jobs running time instead of simple wall time from start to end !6084
   - Show queued time when showing a pipeline !6084
   - Remove unused mixins (ClemMakesApps)

app/assets/javascripts/boards/components/board_list.js.es6

@@ -34,6 +34,11 @@
       },
       issues () {
         this.$nextTick(() => {
+          if (this.scrollHeight() <= this.listHeight() && this.list.issuesSize > this.list.issues.length) {
+            this.list.page++;
+            this.list.getIssues(false);
+          }
+
           if (this.scrollHeight() > this.listHeight()) {
             this.showCount = true;
           } else {