Version: unspecified OS: Linux OS: Chakra Linux: 2.6.35-ARCH KDE SC: 4.5.1 Kate: 3.5.1 (It would help if field values in report form page were up to date so bug reporters don't have to type in this info manually.) After KWin crash (which I can't report because there is no way to do it since windows/apps become titlebar-less and I can't do alt+tab), I have to reset X by force (ctrl+alt+backspace) which resets KDE environment session. If there had been Kate opened before KWin crash happened, Kate will reload in new KDE environment session, but with two windows - one with documents that were loaded before crash, and one with no documents and with no text area where empty document contents should have been shown. You can see what it looks like in attached screenshot. Reproducible: Sometimes Expected Results: Not open additional window.
Created attachment 51493 [details] Screenshot This is screenshot
No idea how that can happen and can't reproduce such stuff with KDE 4.6/7.