Seems to work here:
<img width="553" alt="Screenshot 2024-11-23 at 19 15 23" src="https://github.com/user-attachments/assets/e58bb000-fc13-4520-9b6c-59847c5cbc99">
Just a guess - do you have the [styling] section above uncommented? (Some older Geany versions kept it commented-out and then the config option doesn't work)