Digging under machines won't break them/make them fall

[Fuzzi974]

So I did what could/should have been a mistake : I sent my duplicants to digg 2 layers under some of my machines and... I guess there was sand or something that could fall without support on the layer I wanted to keep, because this layer disappeared.

Anyway, I ended up with my machines floating around... no ground, no tiles to support them.

I think they should have fallen, forcing me to re-wire everything.

Also, maybe it should be impossible to build machine on sands/elements that would fall without support, so this wouldn't happen. I guess it's ok if when we change the ground for tiles if the ground disappear momentarily without support for the machines, but having them stay in the emptiness like this for more than a few seconds really doesn't look good.