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P3D v4 A ground poly issue -- flashing polys

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toprob

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I'll put this here, although I don't think it's a MCX issue, rather a problem with Prepar3d v4. And I don't mean the new PBR textures, but it did only turn up in P3Dv4.4, I think.
This shows up as some textures dropping out and reappearing as you change the view.
It first showed up with a scenery I released back in P3Dv2 days, Real NZ Dunedin. At the time it was reported, I was aware that there was a scenery bug in Prepar3d v4.4 which had just been fixed in 4.5, so I put it down to that. However the Dunedin issue has persisted into v4.5.
When I was putting together the NZCH release, I suddenly has a similar issue there, and I tracked it down to the just-completed runway GP at a nearby airfield. It turned out that reusing the same textures for ground markings at the two airports caused this, but I removed the other airfield from the release so I could figure this out properly. (The fact that it ended up in the release was one of those stupid developer mistakes which shouldn't happen.)
Today, after a discussion over at avsim, one of those affected says he has tracked it down to the GP at the nearby airfield to dunedin, Taieri. Removing the Taieri GP fixes Dunedin airport. This makes sense based on what I learnt with NZCH, but I've yet to find the time to test or fix this.
I thought I'd post this here for info, but also for any ideas on what might be going on here. Anyone seen anything similar with P3Dv4? Since it only just turned up, it is probably something which LM have done to Prepar3d with their recent update. But maybe not, hence the call for ideas.
 
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