Hi, Leo!
The filterbar drop-down has the file count which is very useful, but with long extensions, the file count is hidden due to the drop-down width. In that case, I have to type something to expand the drop-down which is a little inconvenient. You can see in the screenshot:
So I think the default width of the drop-down=the longest extension width+the file count width. I don't know if we should expand the filterbar drop-down a little like that? Thanks!