Hi Team,
Looks like https://www.bryntum.com/docs/grid/api/Core/data/Store#function-revertChanges is not working for number columns that have undefined value.
The same is working for text columns and for number columns that have a null value.
You can recreate it in this playground:
https://codepen.io/javicloud/pen/ExvWVOB
Steps to recreate in the attached recording.
Regards
Javi