1. Switch to tabbed UI for Writer. Reboot. 2. Open Writer, and use its hamburger menu to call User Interface element. 3. In the dialog, select Standard Toolbar, and press Apply to Writer => in a debug build of current master, this crashes (at least on Windows). The problem is the menu that popped up from the hamburger menu. It doesn't close until the command completes -> crashes, when the hamburger menu tries to destroy, and finds out that it has live children.
https://gerrit.libreoffice.org/c/core/+/186470
Mike Kaganski committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/e931c4e9399ba96054ed153204627579242a5cc6 tdf#166996: handle menu commands asynchronously It will be available in 26.2.0. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.
Mike Kaganski committed a patch related to this issue. It has been pushed to "libreoffice-25-8": https://git.libreoffice.org/core/commit/f05e8170d288d1fd2c801c4b62154ee95d3f6df3 tdf#166996: handle menu commands asynchronously It will be available in 25.8.0.0.beta2. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.