Hi, while building and adjusting my factory on top of some of your platforms I find out that if you stand right next to building you going to mine or deconstruct by bots you die. Test it out by doing same thing on land and on different tiles and even replacing your platforms by other tiles and and then testing it without dying. Results of my test is if you stand in bounding box of entity you mining you instantly die when building is mined.
I hope it is fixable, if not at least there is warning for every one to keep your distance from construction zone!