Hi all,
I already added added a topic here about assigning member to a project: that doesn’ t work, the dropdown with users-that-can-be-added is empty.
I now have the same problem with InfoLog: in Details -> Delegation, the “Responsible” dropdown is empty.

Similar in Tracker; when I want to assign a ticket, there’s even no dropdown available:
It looks like something in the core where users are selected got broken.
I had the issue with Projectmanager in 23.1.20241123, that’s why I upgraded to 23.1.20250902. Not sure if the Infolog and Tracker issues where in last november’s release as well.
In Infolog I don’t get any errors, when I open a Tracker item (or create a new one), the error_log says:
AH01071: Got error 'PHP message: EGroupware\\Api\\Etemplate\\Widget::expand_name() eval('$name = "tracker:{$cont[tr_id]}:comments/{$cont[reply_id]}/";);
PHP message: An error happened! (Error): Undefined constant "tr_id" (0);
PHP message: File: /api/src/Etemplate/Widget.php(721) : eval()'d code, Line: 1;