redisplay issues

Switching from 21.4.20 to 21.5.28, I notice numerous small breakages in my VM session (running the same VM code (slightly patched 7.19) in both cases). Some of them I have some chance of hunting down (point being mispositioned in the summary buffer, for example), but some not. In particularly, redisplay seems very flickery. Frames with multiple windows flicker every time certain changes are made to the buffers (I can't be precise yet about what causes obvious flickers), and in some operations the frame goes blank for a noticeable period while XEmacs is doing some computation. In general, it looks as if redisplay is happening when it ought to be held off to wait for some change to complete, and then optimized. Is this a recognized issue with 21.5? I've found no obvious reference to it, though I haven't searched extensively. _______________________________________________ XEmacs-Beta mailing list XEmacs-Beta(a)xemacs.org http://calypso.tux.org/cgi-bin/mailman/listinfo/xemacs-beta