How do I use the filter bar "Type here to filter the table"?

[gqqnbig]

Describe your problem

I don't know how to use the filter bar "Type here to filter the table". In a table (?), I certainly see a lot wh_ rows, but after I typed "wh", the interface shows nothings, as the following two figures show.

I bet I'm using the textbox in a wrong way but I can't find documentations or any hints. Can anyone shed some light?

Extra info?

RPFM version 4.0.14

[Frodo45127]

that "campaign difficulty handicap" right of the filter is the column selector. You need to select the column you want to filter if it's not the first one on the table.

[gqqnbig]

I will recommend to revise the placeholder to "(Type here to) filter on the selected "campaign difficulty handicap"", and the later half should change according to the selected column.

Firstly, it tells what the control filters. Secondly, users know they can select something.

This will make the UI much clearer.