Hi,
The Int64EditBox and variants do not work correctly when a custom format is supplied with three sections e.g. "0;-0;Zero":
<editors:Int64EditBox
Value="{Binding Value}"
Format="0;-0;Zero"/>
In this case, when spinning from -1 upwards, the sequence is correctly displayed as "-1", "Zero", "1". However the Value binding does not get updated with 0 as expected. It jumps instead straight from -1 to 1.
I hope you will find this simple enough to reproduce, but let me know if anything is not clear.
Thanks,
Mike