Changing label of Payment Instrument causes data to fail to be saved

Hi - we edited 'Check' to 'Cheque' and have just discovered that as a result and data entered in to the Check Number field has not been saved!

We have replicated this on Demo. CHange name of Payment Instrument Check >> CHeque

Create contribution. select Paid by Cheque - enter Check Number, Save.

View or Edit record, Check Number is blank