Sometimes I can gracefully resize st windows, sometimes only by a jerk or two and then the grab seems to die. Same for complex iceweasel windows so it looks not related to client redrawing, but it does seem like a race of some sort. Sometimes it seems to get a good grip and I can run the pointer all around freely, other times even moving mouse really slowly doesn't keep hold on window. Once it drop pointer reverts to normal arrow. Window movement, even by the very edges of the window, doesn't have these problems.
Sorry for the vague description but it's all the idea I've got. Britton
