I'm using 5.0.1.37 Linux. I haven't submitted a bug report because I haven't
carefully isolated problems yet, but I did want to at least mention these
issues because I haven't gotten to that yet... I dunno if that makes any
sense, but here goes:

Document name. Opening up a second view of a document named "Rune Master -
Book 4" (without the quotes) resulted in "Rune Master - Book 5" title view
and it not registering that I saved the changes made.

Hangs closing document (this may actually be reported as a bug, just
mentioning here as part of multiple documents at a time.

Incorrect chapter list. Clicking in the document window gadget will sometimes
pull up the chapter list for a different (open) document. I believe this
occurs when switching to a different document via the window manager rather
than using the PgS menu and I had three documents (four views) open at the
time.

Interface minimizes. Using the gui to minimize the active window causes all
but the toolbar to minimize. To get them back you can toggle the palette(s)
to hide then show and they will reappear.

Incorrect palette size. Doing the foregoing with the style palette causes it
to reappear in a different place with a different size (much shorter and
unnecessarily very wide).

Tim Doty