Nesting and placing them inside head sequences with "show waveform" enabled results in partially freezed UI -- switching between panels become unseen until you touch and move dividing borders of the panels, and all the buttons (essential Graphics panel), timeline zooming (in timeline panel) or clips (project Panel) -- all of them become like clickable but not drawing any change on screen -- untill you move the border of the panel to reflash or redraw the viewport -- and as soon as you turn off all audio waveforms for the nested (this is only if there are nested sequences in the cureent opened timeline sequence) -- as soon as you disable showing the waveform -- the problem is gone immediately.
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