Discovered a bug for disabled input on forms ?

Hi, recently I discovered something very strange and I tested it on the ProjeQtOr demo either :

The problem :
When I want to set time (estimated / real / left), If I put the focus on a disabled input an then try to enter someting : of course It doesn't work. BUT, if I use the " . " of the numeric pad on my keyboard (works on another post either) It adds " , " to the input (wich is supposed to be disabled)
You're then unable to suppress the characters added to the input, so u cannot save changes either !


Reproduce :
I tested on the demo of ProjeQtOr, using manager account, I took the first ticket I saw and typed " . " with the numeric pad

Best regards