Verbum 33 B3 and Logos 32.1 (so not because of the new Insights 'tool').
If I attempt to widen the R. sidebar from its default size, it shrinks to half the width and cannot be recovered. I have to re-open the panel, which occupies just under half of my 1600 pixel screen width.
I can get into a deadlock situation if I also try to manipulate the L sidebar.