"FLUXER_AUTO_JOIN_INVITE_CODE" variable doesnt work when the instance holds the sign-up for approval

On an instance that has registration mode set to approval: -Set FLUXER_AUTO_JOIN_INVITE_CODE to a valid invite code in .env and push the changes (docker compose up -d for a docker instalation)

• Open the instance and create a new account
• Approve the sign-up in the admin panel
• Login with the account and observe that the account has not joined the server set in FLUXER_AUTO_JOIN_INVITE_CODE
• Make another Account but use a Admin-Issued Registration URL generated via the Admin panel
• Observe that the account that used the AIR-URL has joined the server set in FLUXER_AUTO_JOIN_INVITE_CODE

Related Issues:

This issue can apparently also be observed when using SSO. See Bug Report #3489.there is also some similar bugs that are marked as fixed, tho those all reference the "Single Community Mode" and are a bit older: #888, #689

After a account gets approved the account should join the server set in FLUXER_AUTO_JOIN_INVITE_CODE

The account does not join the server if the sign-up gets held for approval.

The selfhosted instance was updated today at around 15:30. (11.Oct.)