Prevent TreeGroup buttons being broken somehow

[Justw8]

There has been the issue of BW treegroup being shown after closing the menu, which is also visible in different ways - even though the frames are hidden correctly and are not shown in /fstack.

After just trying some things, I noticed that hiding the frames at the end of the logic resulted in more robust handling of the situation. That's why the code is as it is now.

I have also tried just hiding the frames in the for loop on line 468-470, that however resulted in the same issue.

Here are 2 clips with the change, and without the change:

Hiding before re-creating the tree:
https://streamable.com/grj7oe

Hiding after creating the tree:
https://streamable.com/3t4qpg

I've used this for some weeks, and not had issues after adding this and I don't see why we wouldn't add this atm.

[Nevcairiel]

If i see this right, you could just simplify this a bunch by not keeping a flag, but rather using buttonnum to hide any remaining buttons

[Justw8]

If i see this right, you could just simplify this a bunch by not keeping a flag, but rather using buttonnum to hide any remaining buttons

Yep, done. Still results in me not having the invisible-visible frames.