just tried a training (a10 landing in caucasus) on 2.5 with my oculus and i cannot select the cdu page because i have no crosshair/mousse cursor.
Even if i center the button and get it's label, i cannot click on it.
works correctly out of training.
Also in training Mirage 2000 when looking at teh tacan the cursor mouse is on the taskbar and so clicking does not clickj the tacan button but out the application, loosing focus etc...