Symbols/operator panel has no scrollbar, even if there are too many items, so the user sometimes can't see all of them.
Steps to reproduce:
1. Open LibreOffice Math (or insert a formula)
2. Resize symbols/shortcut panel
Many symbols and mathematical operators are hidden, because there's no scrollbar. I need to use a third of my screen just to be sure that I'm looking at the whole collection.
When there are too many items, a scrollbar should apperar
Operating System: All
Version: 18.104.22.168 release
*** This bug has been marked as a duplicate of bug 65583 ***