Since upgrading to @4.2.0, I'm getting:
"Warning: Each child in a list should have a unique "key" prop.
Check the render method of `KendoReactGrid`. See https://fb.me/react-warning-keys for more information.
in tr (created by KendoReactGrid)
in KendoReactGrid (created by BatchesGrid)
in BatchesGrid (created by Context.Consumer)"
(This is a snippet of the callstack.)
I haven't been able to reproduce in StackBlitz. I'll try to do more troubleshooting next week. I wasn't sure if you guys were getting it on your end or not.