Text fill : bug

Hi,
when i write a content in a text box, and the line goes longer than the screen, what i type just vanishes instead of creating a second line of text automatically even if i ticked in the “multi line” option. i have to manually do the return function, but then it is adapted to only one type of screen… do you have this problem too ?

I’m getting this problem too on Firefox. I’ve used Chrome and Edge and haven’t faced the problem.