Iframe prevents changes being persistent

[LordGyarados]

The bug:
Edits made using this add-on don't seem to be persistent when an iframe is present on the card. Tried disabling all add-ons, butt the issue remains.

Reproduce:
Create a note containing simple front and back card, with the front being editable. Add a simple iframe, referencing any website, really. Save, create a card, then try edit it during review. Then edit it normally (pressing 'e') and card will not reflect the changes made using the addon.

Anki version:
Version ⁨2.1.62 (77dd1dc1)⁩
Python 3.9.15 Qt 6.5.0 PyQt 6.5.0
OS: Linux Kubuntu 22.04

[BlueGreenMagick]

I couldn't reproduce the problem on 2.1.64 (Mac M1)

On 'Basic' notetype, I added the iframe <iframe src="https://iframetester.com"></iframe> to the Front side of the card. Editing {{edit:Front}} edited the card fine. (as checked in the editor)

Since you tested with all the add-ons disabled, I'm not sure what the problem could be.