I checked if this was spinner snap in the setting, but it is both turned off and set to 0,0 just in case.
Does this happen after restarting Max?
I’m on 2015 and I’ve noticed the same behaviour sometimes after long sessions of using Max. For some unknown reason, Max just switches from using the decimal comma to decimal point. Then I just use the decimal point or restart Max. This would also explain why it’s accepting numbers without decimal separators.
Yes, it does. Typing in decimal point instead of comma have no effect either.