Of course, excuse the imprecise explanation. Unfortunately, I can not repore the effect now itself.
What can be reproduced: the very small editor window. . Less than one line. Is this perhaps a problem of German translation? Perhaps because the “save” button has two lines?
Yes, if I change the interface in English, I have three lines to edit, instead of one.
I do not know if this is still a bug, if it is because of a too long translation?