I've tried to reproduce the issue at my end, but was, unfortunately, unable to do so. Could you please have a look at the sample project I've attached to my reply and let me know if you can manage to replicate the error at your end?
If you're unable to do so, please share the implementation of the DataFormNumericField
or ideally - open a new support ticket and send over a sample project that demonstrates the error so that I can further investigate.
Thank you in advance for your cooperation on the matter.
Telerik by Progress
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