Hi all,
Before entering a bug report, I thought I'd check and see if this is a
known phenomenon (since I've seen other reports of issues with recent
versions of Qt).
In LyX 1.6.3-1 on Win XP, with the LyX window maximized (and with or
without a document open), if I change anything in the Look and Feel
menu, the LyX window abruptly shrinks to a smaller size (approximately
700x540 pixels on my display) but thinks it is maximize (the button in
the upper right to toggle status shows an icon with two overlapping
windows and the tool tip "Restore down", there are no resizing handles
when you cursor to the corners, and the context menu in the system tray
has minimize enabled but maximize disabled). Clicking the resize button
once leaves the window the same size but changes the icon, tool tip etc.
to indicate the window can be maximized; clicking a second time actually
does maximize it, and things are back to normal. Alternatively, from
the confused state, clicking the LyX icon in the system tray once
minimizes LyX to the system tray, and then clicking that icon a second
time restores the LyX window in the correct (maximized) state.
I assume there's no point in filing this if it turns out it's a Qt bug.
Cheers,
Paul