Cannot Edit User without Valid (structured) Email Address Set

[duplaja]

What happened?

When editing an existing user, the email address must fit a valid format (or at least contain an @ followed by at least one character). Otherwise, the "Update" button is grayed out, and nothing can be changed for the user, even if the email address is not what is being changed.

Tangentially, if you try to change the user email to one that does't fit the above structure, you get a validation error: "This must be a valid email"

What did you expect?

Since users can be created without structured email addresses, I typically do this, and then use the manual link to send them directly, to finish out their account. I'd expect to be able to retain the same "fake" email when editing.

I'm currently unable to edit most users, unless I start assigning @example.com or other fake email addresses to them.

Kavita Version Number - If you don not see your version number listed, please update Kavita and see if your issue still persists.

Nightly Testing Branch

What operating system is Kavita being hosted from?

Linux

If the issue is being seen on Desktop, what OS are you running where you see the issue?

Linux

If the issue is being seen in the UI, what browsers are you seeing the problem on?

No response

If the issue is being seen on Mobile, what OS are you running where you see the issue?

Android

If the issue is being seen on the Mobile UI, what browsers are you seeing the problem on?

Firefox, Chrome, Safari

Relevant log output

No response

Additional Notes

Happens on latest nightly, but may also be happening on stable (haven't checked).