Hello Alexander, thanks for your quick response. (Please leave at least the 898556@bugs.debian.org as recipient or CC to have the information stored in the bug database.) Unfortunately I guess Qt 5.12 will it not make into the Buster release. Kind regards, Bernhard Am 10.07.2018 um 11:32 schrieb Alexander Kernozhitsky: > > I confirm that with Breeze window decorations this crash doesn't happen. >