I have had a problem with this for some time. Previously, it used to work normally - now I am unable to enter the correct value I want to have set in the options, e.g. line spacing. Actually, it's mainly in this. I can change other options using the numeric keypad - but not this one.
After entering any number, Photoshop 2018 (because that's the version I'm using) enters numbers from outer space such as: 6.16, 151.78. 432.42, 5421.23
I don't know how to deal with this.