Another one we have been having so far 100% of the time :
Upon joining a game, I, as the client, was handed a character with all stats reset to base stats.
5 in each attributes, 0 in every abilities, no talents, no traits. Sometimes gold would be missing, too.
Before that, the host would see the character that was going to be handed over with the correct amount of stats.
Abilities like Leadership would still apply despite appearing to have no points invested, but leveling up would grant only 1 ability point ( at lower levels ) despite previously having Lone Wolf as a talent.
Reloading seem to fix the issue fortunately.
Yes, I would say my friend and I run into this issue roughly a third of the time we load up a saved game. It happens with loading saved games from the main menu, and it also happens with reloading saved games from within the game.