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Looks like Austin is still very busy updating the FM. Massive update to the subsonic jet engine model in XP11 just announced! As you know, we already have our own custom very accurate CFM-56-3 jet engine model. Lets cross fingers that he hasn't messed it up for us...

This is called crosswind correction The aircraft is pointing the nose 10 degrees to the right of desired FMC trajectory/course due to the existing 88 knots of right crosswind pushing the entire aircraft to the left. If the aircraft a/p does not point the nose to the right to counteract those strong cross winds the aircraft trajectory will be deviating to the left of the desired course. Try changing to HDG SEL mode instead of LNAV and set HDG 131 to coincide FMC course. The aircraft nose will be pointing to 131 as per the FMC, but after a few minutes your aircraft will be flying far to the left of the desired trajectory due to the winds. I prepared a picture for you, hopefully this makes simpler to understand what is going on here.