v4.3 (latest) - Factions remaining in a fief for months

[ronodeno]

[v4.3 latest]

Bug description: When a faction is on campaign sometimes all the vassals stay in one fief together for months (so far they've been in their for over 2 months) and a few of them rarely leave for feasts. Currently in my game the Lannisters are all sat in Casterly rock (almost 2000 troops) and the reach are in Lannisport (about the same) and they aren't moving whilst the storm lands and Targaryeans take over what remains of the Lannisters.

How to reproduce it/when/why it happens: It only appears to have happened as one faction has been pushed back into a defensive state and they remain there (there's 4 factions at war with them).

Your computer specs: I7 4770 3.2ghz, 16gb ram, gtx 970, win10

Game version (and steam or downloaded): 4.3 latest, moddb

Additional information (Screenshots ect):