On Windows 10, I experience what I call a bug filtering a table output.

When I search for fx "g:%" the output is both results with "g:" and "G:".

I don't know if you use a function that removes case sensitivity. But the database and all tables don't touch with the NOCASE parameter at all, so my guess is that you do a case-insensitive search in your code, which isn't good. I suggest a checkbox for the user to select if the filtering should be or not be case sensitive.