We have an issue with the Int64EditBox that uses a format with a thousands separator. The edit box does not accept the maximum value.
This is fairly easy to reproduce. Just use:
<ae:Int64EditBox Maximum="10000" Format="N0" />
The edit box will accept 9,999 and 10000 but not 10,000. It will stop accepting digits at 10,00. I confirmed that the same bug occurs with Minimum as well.
We are currently using build 12.2.572 but I can also reproduce it on 13.1.0582.