"data point size" input box: can't see the value after editing

[ghost]

This is the input box before changing the value (currently 2):

And this is after I increase the value

(if I left it selected, it would be even harder to see the value

I guess that input box just needs be bigger/wider.

Maybe this is platform specific. I use Windows 7 32 bit. Fityk 1.3.1.
I see that in some screenshots here https://fityk.nieto.pl/screens.html, even for Windows, the box is bigger.