First of all: Beautiful work on this project!
A couple of things I found:
When I was about to place a figure, scrolling sometimes didn't turn the figure. After placing the figure it worked fine again. As it just happened sometimes I couldn't quite figure out when exactly it happened. Once a figure had already been placed there was never a problem.
Another issue just occurs when you look at the map from a flat angle. When I click on a figure while there are other tiles behind it, the figure is placed on the tile behind it right away. A way to solve this problem would be to only start moving the figure once the mouse was moved a certain distance, or the mouse was clicked for a certain time. Like that, whenever I just click a figure, it only gets selected and won't be accidentally moved some place else.
Something you might already be aware of: It is currently possible to place figures on spaces you can't see, for example behind a ruin, behind a glacier or below an overhang. It is also possible to place figures on spaces occupied by a glacier, a jungle tree/bush or a normal tree.
Another thing you might already know: When opening a different map, any figures placed on the map that was open before remain on their spaces and are invisible. A possible solution would be to open the new map in a different window without any armies loaded in it.
I'm looking forward to the next version! Keep it up