This is connected (Or so it seams) to the train station signs not working.
Just thought I'd add that. :3

I'm encountering the same issue with the V 0.1.4 build.

Reproduced on:
Windows 7, 64 bit

Same issue, Gentoo Linux, 64-bit

April 06, 2017 Update:
Problem still exists... the problem appears to becoming worse. Now nearly impossible to click on the treasure box to accept contents. Although I have noticed that if you zoom in or out with the camera-- this appears to make the situation worse and unable to click on the box at all.

Another player just stood in the center of the glen and was able to repeatedly click on their fallen treasure box without a problem. Whereas, I have to circle around my treasure box repeatedly to even be able to click on it.

In T1098#16886, @White_Pony wrote:

Problem still exists... the problem appears to becoming worse. Now nearly impossible to click on the treasure box to accept contents.

I've found if you don't move the camera from when the enemy dies you have a better chance of clicking the chest but yes, the problem seems to have gotten worst.

Updating to this task, enemies can block your ability to click on a chest, you have to wait on some larger enemies to be allow to click the chest.

The enemies should not be clickable anymore after they have fallen in battle, so it can be much easier to pick up the chest.