Control bar height does not follow icon size

[scootergrisen]

Edit control bar.
Set icon size to 256.
Selevt OK.
set back to 24.

The control bar height remains the same hight as before with the large icon.

Using SMPlayer 16.8.0 + Qt 5.3.2.

[rvm]

I can't reproduce it with Qt 5.5.1