Developer notes for changes in 3.00 Beta 6

UI

(BUGFIX) Fixed multiple UI issues (incl. the most noticeable effect of the missing 1st-person crosshair) in cases where a direct transition from external view mode to 1st-person mode was done. The following cases were known to trigger this:
- while sitting in a cockpit go to external view (F2) and press CTRL+D to stand up
- in 1st-person mode open the map, right click an object, select "external view", and go back to 1st-person view (F1)