Expanded track details panel doesn't render background completely

[Maxr1998]

When long pressing a track and then expanding the bottom sheet, the background doesn't cover the whole sheet and is instead black translucent.

Screenshot

[Chaphasilor]

This only happens when not on the player screen. The playlist actions menu is also affected.

[Chaphasilor]

@Komodo5197 I guess this broke when switching to using the generic menu. Mind taking a look?

[Komodo5197]

This is most likely related to the CachePaint widget not redrawing with the new size correctly. It doesn't seem to be reproducing for me though?

[Chaphasilor]

I only have the issue in the release build on Android. Could that be it?

[Komodo5197]

Maybe? I’ll try a release build later.

[Komodo5197]

It does seem to be a release-only issue. I've put a fix into #749.