We have two accounts. Both are played on a Mac. Here’s the problem.
When we log off and sign in again (without quitting the game first), any character that we play often loses track of the horizon. The PoV camera spins around the character, too quickly to control the character. Logging out to the character select screen doesn’t resolve it. Logging completely out will sometimes restore control. Quitting to the desktop and signing in again always gets a character’s orientation back under control.