Another example of the above: the stone golem did one of its attacks (didn't catch which) and every unit was damaged which I circled. The ground that is unoccupied had damage numbers appear, but I didn't check to see if it was actually hit.
(I would have just modified the above, but I couldn't seem to upload a picture when editing a former post.)
Also, unrelated: that golem stuck in the moving animation stayed in that moving animation, even after the turn ended. Also, it happened again that a couple units, upon moving out of lava, left an afterimage. The afterimage vanished when a new turn began.
Thirdly, and perhaps not a bug: a few tiles 'died' due to the Burning status, including the one the Bowman who is in the lava was on. When his tile died due to burning, he suffers no ill effects; i.e., he didn't take the 20 fire damage from lava until the next turn began.
Edit: both were on v0.455.367
Edit 2: Happened again on Donut Tower, but with an extra find. An enemy Stone Golem punched a charge my Engineer had made. Damaged the charge, but also damaged the two or three units past the charge (like in 'another example.jpg').
Also, when I had my unit destroy the charge on the next round, it did 20 damage to the units around it and 100 to the ground (which I assume is normal), but then the game froze. The unit that destroyed it (a Spearman) was still glowing like he was active. I hit F1 then Resume, and could still move the Spearman, but if I tried to use an item it said I could not because I already attacked... so something about that let me move after attacking to destroy the charge.