It seems that I have fixed the problem on one VM, by completely uninstalling Chrome 145.0.7632.117 (including subdirectories under %USERPROFILE%\AppData).
And installing again exactly the same version...
I've picked one VM where the position of a link was read as 1530x274 instead of the expected (and visibly correct) 740x276...
I've just modified the script to log the link position (on a login page). This page has run already on 26 VMs: 2/3 returned the correct 740x276, 1/6 returned 854x230, 1/6 returned 1530x742. All running the same 145.0.7632.117, installed long ago (roughly 6 years ago) and updated often.
