Cannot display more than 20 users in assignee list
When creating or updating a merge request or an issue, there is no way to display more than 20 users in the assignee list.
To display the assignee list of projects members, internal request is :
/api/v3/projects/22/users.json?private_token=[FILTERED]&search=&per_page=20&active=true
per_page option is hard-coded and cannot be set somewhere.
The only way of assigning the MR to a user that not in the 20 first users is through the search bar.
That would be more suitable to have a way of switching to the next page.