Update after seeing the stacktrace in the comment:
That is indeed the issue that Ronald Catersels meant and that we fixed in 7.23.2.
Perhaps you can work around the problem in older versions by disconnecting the debugger if you are not using it. See the "Disconnect" button in the "Debugger" dockable window.
We are not aware of any issues like this. Can you reproduce the problem? If you have a number of steps to take to make the Modeler crash, we would like to see them.
Are we talking about a hard crash where the Modeler disappears? If so, it might be useful to look in the ‘Event Viewer’ application of Windows right after such a crash happens. In Windows Logs > Application, you will see an error and it might include a stacktrace that helps us diagnose the problem. See the screenshot for an example.
Our goal is a Modeler that never crashes so I hope we can resolve this issue together.
If have created a ticket for this a while back (76990). It has been fixed since 7.23.2. Since that version the modeler just vanishing has not occured anymore.
Yesteday: Work on the modeler, read a mail in outlook
Today: Work on the modeler, change the song in spotify, modeler crash