When first entering a building, actions cannot be performed.

[victorwlin]

When first entering a lumbermill, I can't take the lumber. The buttons work, and I can hear the clicky sound, but it doesn't do anything. Same with when I first enter the workshop. The problem is fixed when I leave and come back though.

I also can't place a lumbermill anywhere. The squares turn green, and I know it's next to a forest, but when I click, nothing happens.