After making successful build for Android (apk works) everything works except exiting application (File/Exit or Close). Editor installed via Unity Hub 2.1.1 AppImage. After Editor is Kill-ed from taskmanager there are no side effects as far as I can see. Next launch of Editor with same project works like a charm. If there was no build procedure while working with Editor exit from application work as it should. Using external official Android SDK from Android Studio. Using external signing keystore. I think that this bug appeared first time on 2019.2.* build Update 1: Same thing happens with new, blank, Project created in 2019.2.5. When testing this I realized that Exit from Editor is not possible after viewing Publishing settings for Project. Building is not causing this bug. Update 2: Same happens in 2019.3.0b3 after successful Android Build on new clean Project. Editor will not Exit/Close unless Killed from Taskmanager Update 3: Same scenario on 2019.1.14f1 using External keystore, blank 2D project, after successful apk build Exit/Close does not work, app becomes unresponsive and only kill from taskmanager works.