Sharepoint List - Filter on multi-select name column always displays no results

Hi all,

When trying to filter my sharepoint list, I am experiencing issues for one specific column.
The filter displays options as expected, listing all of the individuals that are present in that column, but upon selecting any single one or multiple of them, the result swaps to 'We didn't find anything to show here'.
Specifically, when filtering the issue-column on the option of (Empty), it does filter successfully, so it is clearly experiencing issues with the names themselves.

From what I can tell, there are no settings applied to the issue-column that would prevent it from filtering, so I'm expecting this to be a bug of some sorts. Looking for people who have had the same issue and/or have found a solution for this.

Context:
- It is certain that the names used to filter should return multiple results
- List does not contain many entries and does not expand beyond list limits
- Column in scope is a multi-select column pulling the microsoft IDs from all individuals as options
- Another exact duplicate of this same column is present (for a different purpose), for which filtering works without issue
- All other columns filter as expected