Can't adjust textbox in Krita

I draw a text-box in Krita, big enough for the text I want to place. But when I typed the text and the text-dialogue-box closed, the box is exact one letter to small.
I can take a handle to make the box bigger, but that doesn’t work. It doesn’t move. No error message or anything. I can use the vector transform tool, but that changes the text, without showing the hidden letter.


The letter “n” from “een” is missing. Although the original box I drew, was way bigger then what you see here.