Column widths should recalculate when columns are added/removed from the columns array about react-data-grid HOT 1 OPEN

I've faced with the same issue. I noticed that changing the grid area causes the column widths to be recalculated. But the grid virtualization excludes columns outside the screen from the width recalculation, so these steps worked for me:

Firstly, I disabled a virtualization for the columns only by making a patch following this comment: #3249 (comment) .

Secondly, I patched a lib/bundle.js file by changing this line
const ignorePreviouslyMeasuredColumns: boolean =...
to that one
const ignorePreviouslyMeasuredColumns: boolean = true;
(https://github.com/adazzle/react-data-grid/blob/main/src/hooks/useColumnWidths.ts#L23C7-L23C7).

I can't say I 100% understand what my changes led to, but it works pretty well for me now, I haven't noticed any performance issues. I hope this workaround helps you too.

from react-data-grid.