Ok, quick overview: I have attempted creating maps in sc2 edit over the years, but am quickly thwarted by the most basic of problems. Recently I created new terrain with a random height map, placed a drone, and now the drone hovers like a flying unit all over the map, why is this like this by default, and how do you change this? Also another map I had basic terrain, and I placed 1 hatchery, 1 drone, and 1 mineral field, the hatchery works fine, but all my drones have the UI showing the left click and right click functionality for a drone, this is very annoying to have since it covers up all the buttons (ie. move, gather minerals, hold position). Another thing is, burrow is available without me researching it, which it shouldn't. Lastly, I can't select the mineral field (900) I just created, in fact I can't select any of the mineral field types. Sc2 edit is a major deterrent for me. I just want to be able to make a normal map without any quirks that are different from the normal game. Thanks to anyone who can help.
I do have 1 customization in mind, is there a way in the data editor to allow command centers, hatcheries, and nexuses to receive minerals/vespene while in construction?
I don't know what causes the flying bug, but the "left and right click UI" is caused by enabling simple command cards in your game options. Testing the map offline won't use your saved options in Bnet so that UI can be enabled by default.
Burrow does not require an upgrade if you added campaign dependencies, because that's how it works in the campaign. To fix that you need to edit all burrow abilities and give them the "Use Burrow" requirement.
You can't select the mineral fields because this is another game option that isn't saved when you test maps offline, open game options and check "neutral and enemy unit selection".