I finally had some time to do a fresh install of Windows 11 and DOpus. I get the same exact results with a freshly installed OS and no other apps but DOpus. I did not edit any settings in DOpus. During the install, I selected the option to replace win file explorer.
We have no other reports of this issue and can't reproduce it on a vanilla Windows 11 + Opus machine of our own.
We also aren't really involved in what happens when Windows Settings windows are clicked on after they've opened, so if there is a bug it'd likely one in Windows rather than Opus.
Looking at your screenshots, is Preferences / Folders / Virtual Folders / Native display of 'Computer' turned off? Try turning it on if so. (That was how I tested things, and should be the default setting. The header control in your This PC folder looks different to the one in your File Collections folder, which makes me wonder if the setting has been changed. I didn't notice that detail earlier.)