Inconsistent sorting

[Sabr1n4W]

Inside the room members tab the sorting of room members is inconsistent.

To Reproduce
Steps to reproduce the behavior:

1. Create several users with the same lastname
2. Reload users several times (can be done through reload or changing the page)
3. Order of room members changes

pagination-sort-bug.mov

Expected behavior
The sorting of the room members should be consistent.
A possible solution would be to add another parameter (e.g. firstname or id) for the search so that the order is consistent.

Additional context
This behaviour is hard to reproduce because the order sometimes does not change after reloding several times.
This behaviour currently only has been noticed when sorting room members but it could be possible that this behaviour also occurs when sorting other things.

When sorting the room tokens with the same lastname this behaviour does not occur even though the sorting is similar to the sorting of the room memberes.