Two users missing after server/db instance move

Hello.
We use the self-hosted Zitadel for our product. We used to have a simple docker Zitadel instance (v2.68.0) backed by a managed postgres 17.5.

The day before yesterday, we migrated to another managed postgres instance (16.9) and used the provided helm chart to start a high-availibility system on kubernetes (All of this at a new hosting provider).

All went smooth, but for some reason, two accounts are "missing" after the migration.

Specifically:
If I log in to the UI and check their organization, these two users are not shown (But the rest of the users in this org, and in other rogs I checked are there).
If I try to create a new account in this org using the same email as those missing accounts, I get an error saying the account already exists.
If these two users try to log in, they reach a black screen with the text "Registration Options: Choose how you'd like to register".

Is this a known issue?
Is there a way to get these users back?
If not, is there a way to remove them completely from the system so they can be recreated?

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As an additiona info, we think that these two are the only two people who have activated "U2F (Universal 2nd Factor)"
I now tried to recreate the issue on our test server where I use a local db in docker and local Zitadel in docker. Here I can still see the affected users in the UI, and when they log in they are asked for a passkey (I am guessing that the browser sees the new dns and therefore will not share the passkey from the prod system)

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I check the logs when I try to access this users info-page via direct link (I have their ID). In the zitadel logs, I do not get any errors from calling the page.

In the UI, I get a pop-up in the top-right corner, I get a popup saying "undefined. Close"
I have also checked the browser console, but get similar results for working and non-working users.
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