Users lose their input if they try to type a second decimal separator

[andreidiaconu]

Not sure if relevant but I'm using a Locale where decimal separators are , eg: 12.345,67

Steps to reproduce:

1. Simple Text field with a ThousandsFormatter(allowFraction: true) input formatter.
2. Type 12345,67 which renders as 12.345,67
3. Continue by typing ,

Expected:

1. You see 12345,67

Actual:

1. You see 0,

As it happens, I needed to do some other formatting and I fixed this by adding a formatter before ThousandsFormatter, which makes sure that a second , is not possible to type.

[Sun3]

I also can duplicate this same issue as @andreidiaconu but in my case, I use the period . to separate decimals.

[minhdanh]

I'm still having this issue as well.