People would not be oriented the same inside the Oasis as they are in the real world. This problem was evident throughout the movie, and at its worst, was during the final battle on planet doom. Even if you could argue that the 6-ers were to start out in some sort of strict formation in the war-room as well as in the Oasis(unlikely), the further the battle rages, the more shuffled they would be with 6-er avatars 'zeroing-out', others filling any available spot in the war-room, and making the MechaGodzilla shaped red mark in the war-room impossible, and the cataclyst zeroing-out the whole war-room in a wave pattern the grand-finale of this specific blunder.
1) During the 2029 scene of Halliday and Morrow, the type, orientation and cleanliness of the bottles and plates on the tables around them change a few times during their conversation. 2) Later, in the scene where Halliday and Morrow are talking about the date with Kira, the scene is paused while Curator, Art3mis and then Parzival step away for a side discussion. When Parzival pulls Art3mis away from Curator to talk some more, Halliday and Morrow are missing from the room and the table has changed orientation, but when Parzival starts to step back towards the scene, it is back to the same state as when it was shown paused.