Step to reproduce:-

Once you delete the numbers and only '-' is there in the field, the field turns to NaN and after that the error is not fixable, you have to go back one level and start editing again.

In the GUI to: ManagedElement[id]/GNBCUCPFunction[id]/NRCellCU[id]/NRFreqRelation[id]/attributes

Try to edit say ‘qQualMin’ which has a range of -34..-3 | 0

Issue can be reproduce with O-RAN-SC RU Simulator (Version:  http://nexus3.o-ran-sc.org:10002/o-ran-sc/nts-ng-o-ran-ru-fh:1.3.3)

Workaround:

Delete '-' from the number before deleting other digits

Start with numbers and then add - to it.

Add '-' after you have added the number

Solution:-

Number type casting causing the issue.

• in apps/configurationApp/src/components/uiElementNumber.tsx
  • Replace type numberInputProps = BaseProps<number>; 
  • with type numberInputProps = BaseProps<any>;
• and props.onChange(num); with props.onChange(data);