Power Query / Get & Transform filtering on text

Hi!

I am trying to filter a table in Get & Transform on a text ("contains") but it just won't work...
In Excel is works, int he regular table but in Get & Transform it doesn't. It returns an empty table. I tried two different columns (both on text) and they both react the same.
If I filter on only 1 letter it does seem to work but when I add the full work it doesn't.

I tried to create a dummy table and do the same, that actually worked. But I don't see any strange formatting or anything in the original data. If I use the search box, it does work, but I need to apply multiple filters at once so that won't do. Tried different words as well...

Anyone has any idea how come?

Text filter Contains.JPG

Text filter Contains - empty table.JPG

maybe use IF column then filter by it

Tried to add a conditional column but then it also did not recognize my text value.

pictures are useless, attache example excel file

I found out the reason, very silly, sorry: case sensitive......

this is a basic rule in PowerQuery not silly reason