As far as I know, it's a problem with the PU coating itself, so silicone coated tents will be immune. That's not to say that they might not have other problems, or that the groundsheet in an otherwise silicone coated tent might not be PU coated.
It doesn't erect outer only, but the outer could be put on inside out, which accomplished the same thing more conveniently. Unfortunately, my research would have me believe that any improvement is purely temporary, and the PU will continue to rot inside/under anything else that may be put on. Currently it's still stuck to the nylon of the outer well enough to not peel off when I separate it from itself. I could probably make it last another 2 or 3 years, but the problem would be that I would never be sure it was going to be still OK when I took it somewhere, or whether pitching it would peel chunks of coating away from the outer.
I'm now looking at replacement tents. Maybe an Allak. I much prefer side entrances to end entrances, so a tunnel like a Nallo is out.