What you were expecting to happen, and what actually happened:
Exited from Explore in Leonis after swapping class and saw the map screen was not right. Swapped to Underworld and back resolved it this time.
How often does this happen? When did it begin happening?
One off, may be related to the after battle red flash issue.
Steps to make it happen again
Was doing Explore 1 in Leonis, entered team select for second battle, swapped class from Doomslayer to Deathknight then backed out to the map. Doubt its repeatable but might be wrong.
I tried to get a picture of the red flash as well at the end of battles going back to what I think is the Kingdom map
What you were expecting to happen, and what actually happened:
All kinds of real weird graphical issues since update today
How often does this happen? When did it begin happening?
Consistently – started right after the upgrade, and continues even after rebooting, and downloading all graphical content.
See few pictures above for examples.
In fact I had a board completely go blank during a battle.
Flashes as screen rendering looses elements, switching between areas, during battles (loosing opponents in their panels for example)
Steps to make it happen again
Well given that earlier today (like 2 am my time) I was finishing up an everything was fine, and updated to latest version -and that is all it took to start having weird stuff happen when rendering.