Clion

I am trying to use Clang/LLVM 9.0.0 binaries with mingw-w64 (8.1.0) for x86_64 with Clion 2019.2.5 on Windows 10. 

So far, everything works well. Except the debugger: every break point is ignored and I cannot stop program execution. Debugging behaves exactly like running the program, with a single difference: the debug console opens.

My breakpoints can be found in the breakpoint window, and changes in the code are reflected in the output. 

I have tried setting every CMake flag I could find in every blog post (and removed them without effect). The generated run configurations are explicitly set to `debug`. 

I have installed mingw-w64 in multiple possible configurations, as well as invalidated the clion caches and restarted. I rebooted multiple times, just in case.

This is a screenshot of my toolchain configuration:

The same issue appears for a colleague with a similar setup, but entirely different hardware, running different code.

Any ideas?