I'm not sure where to put it. There should be a bug report / idea submisison forum.
I played a game on Small Divide, I was trying to get a Jeffy to bypass enemy defenses by running along the map border, and Spring told me something like my Jeffy was out of place and deleted. Well, that was more fun that annoying. Then, during a game on GoW, some skeeters were moving and getting stuck either in island or in in the map edge straight out of factory. It was annoying to get 5-6 skeeter stuck that way, and to have one or two deleted because out of map. Then Spring crashed, and I suspect it was related.
So well, there's a bug when units are near the edge of the map.
Maybe not related, but skeeters (and other ships) like to ram into land and get stuck there. Exacavating around isn't as easy at it sounds, they are usually best just to be considered either lost or as fixed turrets.