Anyone out there who has "Compile Fail" with console debug?

Is there anyone out there who also has a “Compile Fail” after (!) compiling console apps in Debug Mode? Looks like this:

XojoCompileFail

It shows up in the latest two Xojo Editions, but only with Catalina. Big Sur is running fine. I opened a feedback ticket already, but no one is able to reproduce it obviously.

Console Debug Error

I get it already trying to compile the timer example app - but not from start. It occurs after inserting some classes and working a time. If someone knows how to reproduce this it would be nice to know to complete the ticket.

Thanks a lot!