Web clipper fails on GitHub issues with a strange message

[myii]

For example, attempting to clip zadam/trilium#257 results in:

Support for custom fonts · Issue #257 · zadam/trilium

Attach files to your comment Attach files by dragging & dropping, selecting or pasting them.

<octocat-spinner-32.gif>

Uploading your files… We don’t support that file type. with a GIF, JPEG, JPG, PNG, DOCX, GZ, LOG, PDF, PPTX, TXT, XLSX or ZIP. Attaching documents requires write permission to this repository. with a GIF, JPEG, JPG, PNG, DOCX, GZ, LOG, PDF, PPTX, TXT, XLSX or ZIP. We don’t support that file type. with a GIF, JPEG, JPG, PNG, DOCX, GZ, LOG, PDF, PPTX, TXT, XLSX or ZIP. Yowza, that’s a big file with a file smaller than 10MB. This file is empty. with a file that’s not empty. This file is hidden. with another file. Something went really wrong, and we can’t process that file.

---

Saving a selection from the page via. the context menu works fine.