Comment 1 for bug 1815314

The issue is that the we need normal & the maximized libary as two different occurences of a library singleton in Deere & Tango, due to the stacked waveforms that can be hidden/moved.
I tried a few things earlier but couldn't solve this issue from within the skins.

I think of a CO that tracks the library table/tree focus state. This would be helpful also for situations where you clicked on waveforms (library unfocused) and quickly want to use the Trax knob again.

I there a way to emit a signal when widgets pseudo state changes to 'focus'?

related: https://bugs.launchpad.net/mixxx/+bug/1673196