Background of the issue:
I am trying to make a user a translation manager as described at https://wpml.org/documentation/support/wpml-admin-capabilities/ but no users appear in the dropdown. I tested with the health check and troubleshooting plugin, only the newest WPML and 2025 theme enabled. It seems to be working much better on sites using older WPML.
Symptoms:
No users appear in the dropdown when trying to select a translation manager.
Questions:
Why are no users appearing in the dropdown to select a translation manager?
Did you change anything? Because it is working fine in Chrome now, we get near-instant results when searching. In Firefox it takes about 10 seconds for the results to show up, but I guess that's better than no results.