Issue with flickering previews in Slack thread, resolved by changing implementation.

Can anyone confirm if previews are supposed to flicker like this or if i'm doing something wrong (using the iframe plugin for previews, with the app router):

It's doing a full refresh it seems rather than hot reloading

maybe you are returning null if the data is not there?

Right - that helps. Less flickery. Do you know if the page should still fully refresh to show the content?

I was expecting a hot reload content swap

Are you using the latest version? https://github.com/sanity-io/next-sanity/blob/main/PREVIEW-app-router.md

Yes. I just changed my implementation from that to the one here https://www.sanity.io/guides/nextjs-app-router-live-preview and it works correctly now

Thanks for your help

No problem!