Impersonation Tokens empty in 11.4.3-ee

Summary

After upgrading our self hosted Gitlab (tried on two servers) to 11.4.3-ee, all impersonation tokens have been replaced by empty strings. See below:

When deleting and creating a new token, it creates a new empty one.

Steps to reproduce

Upgrade to 11.4.3 and create impersonation tokens.

I tried it on two servers and the same thing happened, can it be that I'm missing a migration or need to restart something (tried to restart gitlab but that didnt help)