Weird graphics bug

The purple units in the screenshots aren’t actually there. If I center them on the screen, they disappear. And the green units are where the castle is supposed to be. I can target the castle and attack it just fine.

I have tried to ask on reddit. No response.

System Specifications:
Intel® Core™2 Quad CPU Q6600 2.40 GHz
8 gb RAM
Windows 10 64-bit
1 gb graphics card

In-game, the graphics are set to low except that blood is turned on.

Things I have tried:
Turning v-sync on/off.
Fiddling with the bloom, depth of field, gamma, resolution, etc.
Switching between windowed and fullscreen.
Searching for it online(couldn’t find anything).

I am probably missing something obvious because I am a noob when it comes to computers.

P.S. The online play test available in the options gives me 989 and doesn’t seem to detect this issue even though it kept occuring during the test.