Filters in Youtube search are not working [on hold]

When I go to www.Youtube.com and search for e.g. "London", I see many videos.

When I click on the "Filter" button and enable any filter (e.g. Upload Date: Last Hour, Today, Last week, or Features: HD, 4K ...), the search results don't change at all. Filters are ignored.

It has been like this for me for two weeks. I am wondering, if it is just at my computer / my country, or it is like this for everyone? Do you know any way to let Youtube know about this bug?

EDIT: I just found an answer: https://support.google.com/youtube/thread/2494861?hl=en and there is a response from an actual person from Youtube. So I think we can delete this now.