https://bugs.winehq.org/show_bug.cgi?id=39440
--- Comment #4 from phant0m anton.kalmykov@gmail.com --- Thanks for your comment, Sebastian. That was my fault that I didn't implement the handling of PropertyNotify. But now I've implemented it and it seems that resizing issue is still present. The first section of my patch file is still needed to fix the issue.
PS: Just in case my English is not good enough, here is a video, demonstrating the "size increasing issue": https://dl.dropboxusercontent.com/u/33529975/resize-issue.ogv