I have a problem with Firefox and not with Chrome or Edge
There is one video for each or Chrome and Firefox below.
You will see that in the Firefox video, when the mouse is moved over the tabs, the highlight of the tab stops after about a third of the way acroos the third tab.
It is at this point that the user is unable to select that tab or any of the other tabs to the righ hand side.
Also, a similar thing happens in the grids in that rows cannot be selected.
None of these issues occur with Chrome or Edge.
Help and suggestions welcome
TIA
P.S. File uploads are being rejected / refused so I will email them to support