Just as additional context:
I was able to reproduce this issue reliably on different Linux-based systems (Garuda Linux, CachyOS/Arch, and also Debian-based Linux Mint). Unfortunately, I cannot judge how it behaves under Microsoft Windows or macOS.
It might depend on my hardware configuration or possibly on using an NVIDIA graphics card with the respective driver – I can’t fully confirm that, but it’s worth keeping in mind.
So, even if the bug does not occur on every setup, it is reproducible under certain environments. Perhaps this information could be forwarded to the user who had the same issue in the browser. They can simply try my small fix script to see if it solves the problem for them as well.