Display of [...] icon delayed when switching panel tabs

[avvvvve]

Issue type

UI bug (incorrect info or interface appearance)

Bug description

See video. It takes a short moment for the three-dot icon to load in after switching between panel tabs.

Steps to reproduce

Click between Properties and Palettes tabs

Screenshots/Screen recordings

three-dot-delay.mov

MuseScore Version

Latest master (4.4), 4.3

Regression

No.

Operating system

macOS 14.1.1

Additional context

No response

[cbjeukendrup]

This was added deliberately in #9957 to fix #8659. But it hasn't even really fixed that issue: when you click the tab simply a bit longer at the location where the '...' button would appear, that bug is still reproducible, i.e. the menu still pops up.