Chrome to Firefox data import does not work

[phere-x]

Reinstalled & cleared data. Nothing works.

In fact, I backed up my Firefox settings first before clearing everything, and when I tried to restore the same file I backed up seconds ago, NOTHING changed. No bookmarks imported, no theme changes.

Desktop:

• OS: windows 10
• Browser: Firefox
• Version: 113.0.2 (64-bit)

[phere-x]

Importing to clipboard on Chrome, then using "import from clipboard" on Firefox gives error:

Not the right kind of data. Make sure the clipboard holds data from nightTab or a nightTab backup JSON file.

Clipboard data

[franklinprime]

Same issue, even copying data from Firefox and trying to reinsert fails so it seems to be something wrong with how the Firefox version specifically handles imported data.