I wouldn't bank on 7.5 solving this. It seems that the issue isn't the famous Chromium140 issue(that affected UIA elements), but something else entirely.
Hi Bridget, we've had this exact issue on 7.4.1 where it's only ever the first attach of a session! In our experience, there are a couple webapps that are affected more than others - those webapps being ones where some login/auth is taking place, and...