First game of new patch. Select tech, moved my sovereign to the first goodie hut... then the GUI was lost and I couldn't figure out how to get it back. Couldn't advance turn, couldn't build, etc. City and sovereign were still selectable.

I immediately created a new game and tried to reproduce the bug but I've been unable to so far in a few builds.

Also, so far among all these games I've not seen any rivers yet. So good news is the rivers flowing past the oceans appears to be fixed. Bad news is I'm not sure it is an intended solution.