Hi Emil,
We were unable to reproduce the reported issue "SfNumericUpDown Exception on latest version V15.3.0.26 in the emulator". We have prepared a sample, video for the same and you can download it from the following link,
Sample:
NumericUpDownSampleVideo:
NumericUpDownVideoPlease get back to us with modified sample reproducing the issue along with replication procedure so that we can proceed further.
Regards,
Chozarajan P