Private MSK wasn't written to 4S after hitting "Reset all"

[bwindels]

Steps to reproduce

Background to why I was looking into 4S account data is that I started to work on cross-signing on Hydrogen and saw that on my test account (@bruno4:matrix.org) the m.cross_signing.master 4S key was only encrypted with an old key from a few resets ago. So I wanted to fix that by enable cross signing somehow in Element.

I opened Element and when asked to verify my device after opening Element, I was asked my security key. I entered the one that worked in Hydrogen to enable key backup, but for some reason Element said "That looks wrong". I also used the upload button, that didn't not work.

I proceeded hitting the "Reset all" button. The reset worked but my private MSK in 4S hadn't changed.

After all of this, I have reset just cross-signing which did write the new private MSK to 4S and fixed the situation. Even doing a full reset, I am not able to repro the problem anymore.

Outcome

A full reset to also reinitialize cross-signing

Instead, it didn't seem to do anything for cross-signing, it just reset key backup and 4S

Operating system

Fedora 36

Browser information

Firefox 105

URL for webapp

develop.element.io

Application version

Element version: 087ecc8-react-bb4b07fdc9a6-js-c67325ba07bc Olm version: 3.2.12

Homeserver

No response

Will you send logs?

Yes