There are two versions of this:

1. Log in and screen is a few different washed out colours that change when the mouse is moved to rotate the player.

2. Once log in in complete and player is loaded, the screen is fuzzy like when post processing is turned up to high. But instead of it only being in locations that should blur, it is the whole screen except for the inventory screen.

Also appears that the same issue is present on the log-in screen as well, with the same fix.

To fix these issues, you go into the settings menu, and go to the graphical settings, and it just automatically goes back to normal. {F28263} {F28264}