This is surprisingly easy to forget: If you add custom Java code to your application and it contains a compile error, Qt Creator will show you the error messages in a nice list, and you can double click on them to open the broken file at the given location.

However, on Linux, when you do this, Qt Creator segfaults, and on Windows (in a shadow build), it will open the copy of the source file in the build directory, since the source files are copied in there before they are compiled. So any fixes you make to the compile error will be overwritten the next time you deploy the project.

It would be great it were possible to open the source of the Java code instead of the copy when you double click the error messages.

Plan B would be to disable the "open in line with error" feature for Java errors, since opening the copy of the file is never useful.

And, of course, it should not crash on Linux.