ill look at the first issue.

The second one is a little trickier. All the rooms have to be overridden with other tiles to "delete" them.

Its just how our system works. if you could delete it there would be nothing below it as earth is just as much terrain as lets say a claimed tile or Lava. I actually gave this feedback while the editor was still in development, maybe it will be possible to just revert everything back to earth if you delete it. but then again im unsure if that would help you.

Hello Tomasz,

I will inform our OSX testers, it may take a bit to get a response.

Hello Just,

It was probably on of the other QA guys talking with you, can ypou please explain your issue in more detail?

flaggin as fixed, please report back if the issue still persists in the next patch :)

replicated and exported.