Hello!
I have just turned on multiview in my WebXR application, and the entire scene is flickering whenever a GUI element is present. I am on Meta Quest 3 OS v76.1020 with browser version v38.1. This issue occurs with WebXR chrome flags on and off. For now, I’ve just rolled back multiview, but I would love to be able to enable it for the performance benefits.
I found a similar bug to this with this playground to repro: https://playground.babylonjs.com/?snapshot=refs/pull/14753/merge#9k3mra#1430.
The issue seems to be worse with scene.clearColor set, as the scene will flicker entirely with the clearColor: https://playground.babylonjs.com/?snapshot=refs/pull/14753/merge#9K3MRA#1942.
Thanks for any help you can provide! I will also try to reach out to the folks at Meta, since it could be an issue on their side.
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Thanks for reporting, I will look into that soon (probably next week). Assigning to me 
I had my teammates validate this behavior on Quest 1 and Quest 2. They said that it does happen on Quest 1, but they could not reproduce it on Quest 2.
I also reached out to some folks at Meta on the WebXR discord, and they replied, “flickering with multiview usually indicates that you’re switching rendertargets mid-session. That is done by design in the multiview extension and not an issue with the Quest browser.” Hopefully that adds some helpful context!
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Just making sure - are you using the latest babylon version? The playgrounds you pasted are both from a.specific snapshot, but I assume you also tested 8.X and it behaves the same
Sorry, I had just pasted that from the older issue. I did validate on 8.5.0, and the issue reproduces for the playground: https://playground.babylonjs.com/#9K3MRA#1942.
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