PS I wouldn't say you are crazy, but your system might be ;-)
Well, if it happened just on one, it could be. But this happens both with the macOS binary and on Linux VM (on the same macOS but it's a different GTK backend). Basically the CPU oscillates somewhere between 0.3%-1.0% in `top` after first using the progress bar:
<img width="734" alt="Screenshot 2024-06-11 at 10 51 02" src="https://github.com/geany/geany/assets/713965/3522d620-fcb3-4101-87e1-021c31f87543">