That does sound like the issue.
It seems that, in VR, the cursor isn’t registering clicks properly at certain positions.
Since it does work when I'm very close, it’s likely that something is interfering with part of the EFB’s functionality.
As you mentioned, checking whether it still clicks properly when you move a bit farther back makes sense.
Given that the EFB is mainly used right before the flight, it looks like the flight itself should be fine for now.
Thanks for the response.