Steps to Reproduce

run fiddle

https://zkfiddle.org/sample/diahm6/2-column-width-headers-out-of-sync-with-cells-chrome-zoom

Use browser zoom (in or out)

Current Result

Columns and rows borders are not aligned by 1px

Expected Result

Columns and rows border should align

Debug Information

not align even without zooming

breeze:

 
sapphire:

Workaround