I’ve encountered something similar before, and it typically happens. When buttons don’t trigger popups or certain actions in the panel, it’s more of a frontend issue than a problem with the actual functionality behind it. If the DOM is being appended but nothing is showing, it could indicate missing JS events or a conflict in the scripts/styles.
One thing worth checking is whether all required JS files are actually loading without errors (sometimes a small missing dependency can break multiple actions). Additionally, browser developer tools can help you determine if the events are firing when you click those buttons.
Not a complete solution, but hopefully this hint gives you a lead on where the issue might be.