Based off the screenshot and what you said it sounds like a parameter or setting is getting initialized that is causing the pink hue. What makes me think this is the sky seems like it isn’t changing much in the screenshots so it could be a light that is changing when you play.
A good way to know if it is related to your code/project is to make a blank mobile project with nothing in it. Then deploy to your nexus. If things turn pink that is a problem and I will investigate.
If it is something in your project try to see if it happens only when you play. Or if it only happens on the nexus. That way if it always happens when you play check everything to make sure you aren’t changing something by accident on begin play.
Just so you know, I re-enabled Static Lighting (Even though i don’t use it) and it fixed the issue i believe.
I also tried turning on Mobile HDR at the same time, and i think that resulted in very “Harsh” shadows - Looked similar to ruled lines or when you lower the shadow accuracy on a normal light to the extreme.
So, i’m not sure if this is an issue you want to look into but it could of been a 4.11 only problem.
Cheers again for the help,
If you want my project for testing purposes let me know
With more time spent testing, the bug doesn’t seem consistent, I had it trigger with the removal of HDR, even though IIRC the project initially didn’t have HDR (Mobile) on.
I’ll keep you posted if i find the cause, although I am hesitant to play too much and risk having to recreate the project