I’m not using 2022 Revit yet. But I’ve had multiple issues with images placed as Decals in Revit not showing up in Enscape after they were working before. Whether it’s an Enscape version change that has caused it or type of image, or Render Path issue as Phil posted, for you I’m not sure.
But I’ve typically ended up re-adding the decal in Revit and rechecking Enscape, and doing this with a couple image formats if needed until it works again. Never yet nailed it down to just one thing causing a decal to blink out.