The z-order for fixed columns is too high (99). In the styles it looks like :
.react-grid-Cell--locked:last-of-type {
border-right: 1px solid #dddddd;
box-shadow: none;
z-index:99;
}
However this interferes with loading spinners. Eg :

I changed the z-order to 10, and the table still works perfectly fine. Perhaps you should change it to a lower number.
Yes, I'm having the same issue with select rowSelection: { showCheckbox: true }
I get z-index: 99 which inteferes with other stuff on the page, i.e. date time pickers, popup dialogs, etc.
Please fix that.
Seems this is no longer an issue, at least with version 2.0.76
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The issue is still there in 4.0.7
Most helpful comment
Yes, I'm having the same issue with select
rowSelection: { showCheckbox: true }I get z-index: 99 which inteferes with other stuff on the page, i.e. date time pickers, popup dialogs, etc.
Please fix that.