Luckily enough I was doing a stream test ..( good job it was just a test as I had the game sound muted ) but that meant I was recording it.
Generally I find the mouse sensitivity very high in game, even on a low mouse dpi setting. It would be nice to have some in game adjustment to both mouse and WASD 'speed' I mention this as I think the cause of this bug was in part due to my rapid mouse movement.
I had the Shack selected to build while moving around the map using WASD to find position. After I unintentionally 'flicked' the mouse the building became stuck and no key press or mouse click would let me continue.
I couldn't interact with the 'Esc' menu, so not able to Save or Quit the game, I had to kill the process to exit.
2 min clip
[00:257:24] Kain Baker a vegetarian, is refusing to eat meat and work at any livestock ranch. VEGETARIANISM RESOLVED: EXECUTION ENACTED [00:281:01] Kain Baker was executed for the crime of vegetarianism.
"Eat meat or die!" - Larry Lauder (Blaffensniff Colony Leader) Year:0 Day: 282 (AS.07b)
Thanks. I replied to you on Discord about this but thanks to your video we could track this down quickly.
Just so others know: We think this is a bug that will occur on the Iceberg and Floodplain level if you try and place a building deep into the ocean (which happened when your mouse accidentally flicked towards the horizon)
We will try to squeeze in a fix for this in 0.0.9 which is coming soon.
At the moment mouse sensitivity is a bit high I agree. Need to add a senstitivty slider one day!