Beta 6 Single-player pre-game UI is wholly broken

• ver 0.6.7973
• Direct3d 11.0
• Win7 64-bit, 16GB RAM
• Graphics settings: Medium, 1920x1200, 30fps, full-screen

Started up the game a moment ago and was informed that Beta 6 had been installed since last play.  I thought it was a short changelog, but maybe not all changes logged(?)

Clicked single-player.  Would have liked to resume my skirmish from earlier, but was no longer available due to the update. (Pain point.)

Clicked Skirmish, and was brought to the pre-game setup UI.

Clicked Difficulty dropdown, and while it highlighted, there was no dropdown (see screenshot).  

 

Same behavior observed for each UI dropdown element.  When clicking the player name, a column of weird boxes appeared at the bottom.

When I clicked "Standard Rules" button, it brought up an empty pop-up that I could not close.  (See screenshot).  

 

Even escaping back to the main menu did not clear it; I had to exit the game.

Exited game and was able to repro.  Exited game, restarted Steam, restarted Offworld, and was able to repro.

I was able to click "Start game" and begin a standard game.  It seemed slow and choppy compared to Beta 5, but I'm not certain, as I usually play with Reveal Map.

Please let me know if any other information would be helpful.