Validation of cells is incorrect if I try to remove multiple rows via the context menu.
https://jsfiddle.net/L8me6cts/
If you select rows 2 thru 5 and then Remove Rows via the context menu, the invalid cells appear over cells that are actually valid.
we are working on a new version - 8.0.0. This issue is already fixed on our testing branch https://jsfiddle.net/AMBudnik/escwyz78/
Thanks for the quick response!
Looks like this version doesn’t have the fix in it? 
npm i handsontable@8.0.0-beta.1
this points to beta1, I’ve send you revision 8 of beta2. It is on our testing branch, and hasn’t been published to npm yet. We will add it after doing all the tests.
I have good news! We’ve just released 8.0.0-beta2 that fixes the mentioned issue. We won’t be closing this ticket now. It will be closed after we release the final 8.0.0 version of Handsontable.
Here’s a full list of changes https://github.com/handsontable/handsontable/releases/tag/8.0.0-beta.2
NPM https://www.npmjs.com/package/handsontable/v/8.0.0-beta.2
All feedback’s appreciated. Thank you for your input.