NOT filter operator does not work for several filters

Summary

When using the filter to remove "approved-by" in a merge request list. This filter does not work. I am trying to filter out merge requests that I have already approved.

In the screenshot, the first merge request has already been approved by me, but the merge request is still showing in the list.

The NOT operator is not working correctly for the following filters:

• Approved-by

Relevant logs and/or screenshots