Hi! Just to check, is Konsole crashing in that case, or is it that whole window is closing? For example, are you prompted by the Crashed Processes Viewer to submit a crash report?
If you’re only wanting to close the active tab, then I would think that “Close Session” is the shortcut you’d want - Ctrl+Shift+W by default - as opposed to “Close Window”?
Konsole has many non-standard shortcuts, you have to take care to check in Konsole settings/shortcuts.
Also, take care to differentiate between closing windows, closing applciations, closing tabs, closing sessions… they all behave differently and can become confusing. CtrlAlt, brings up the keyboard shortcuts for Konsole… very important shortcut worth a tatoo on the back of your hand