On Tue, 18 Aug 2015 23:40:32 -0400 Frank Peters <frank.pet...@comcast.net> wrote:
> > As I mentioned, a program restart usually fixes the problem. However, when > and if this problem will occur is not predictable. It happens only > occasionally > and never consistently. > I've discovered something else that seems very significant. The behavior depends on the relation of the position of the window in which the problem occurs in relation to other windows. If I shift the widow around I can get different appearances of the sub-menus from complete to very thin to a one pixel line. Thus, the fault would seem to be with how GTK+ calculates the window dimensions in relation to other windows. In some cases a miscalculation will result in a negative height. The fault could also be with the window manager which, AFAIK, reports window positions. But then I only understand little about the mechanisms of the X Window GUI and how window managers and took kits interact with it. Anyway, if the problem occurs, I just need to shift the window to another position and that should take care of the sub-menus. Frank Peters
