Search through views exposed fields unusable?

I wonder if anyone else has this problem...

If I expose custom cck fields in a view and search something, then delete everything from the search field and hit search again, there are no results. I get results only if I select the "not equal to" operator. It is not an issue with the views module, because I tested the same thing with non-cck fields, and they work fine. It seems that search criteria are not reset when the query is empty...

The "match pattern" operator does not work either, only with full matches. Or is it supposed to be that way? (this should probably be a separate issue...)

fyi, I have the patch from #60384.