Strange horizontal lines in Ptyxis terminal

[jeanas]

I just installed a fresh Fedora 41 system. I was previously using Fedora 40. In the Helix editor (also installed from Fedora repositories), I'm seeing some very strange grey horizontal lines that were not present on Fedora 40 and which I cannot reproduce on GNOME Terminal if I install it on Fedora 41:

ptyxis-helix-horizontal-lines.mp4

I'm not sure if this is a bug in Ptyxis or Helix. Any ideas?

[cross-post of Ptyxis issue]

[TornaxO7]

If I'm seeing that correctly, the issue doesn't seem to be on Helix side, right? So can this be closed? Nvm, this is a discussion xD
Eh, but somehow marking this question as answered would be still nice I think.