One of the problems that was found earlier is that the objects on which passthrough material is applied difficult to interact with, as their volume is not felt, and visible through them the image room no longer corresponds to 3D model with the material.
Three objects with passthrough look like one single form
What does it really consist of
After testing different visual solutions (color dimming, fake cubemap with simulated blurry passthrough), we settled on a variant with the Wireframe effect.
For this effect, an additional UV channel, the so-called barycentric coordinates, must be generated for all objects in the scene (from the library and imported custom models).
Since some objects have a non-dense grid (like a cube), we have added a fresnel effect.
We also adapted the resulting visual for different states: selected, highlighted, and locked. And we liked the result so much that we applied it to all the materials.