I have a procedural mesh square I use to show what cell I am hovered over and works great.
Problem is when I rotate the camera at a certain position it will disappear.

here is the material
Have you set the bounds of the mesh? If it’s not set right, it will disappear when only part of the mesh is off-screen.
Yes the bounds are all set. this is a weird one because in UE5 with same exact settings and setup it doesn’t happen.
Might be an issue with the sort order of the translucent objects. Try setting the sorting priority to that overlaid mesh to be higher than the order of the background mesh (basically > 0): Using Transparency | Unreal Engine Documentation
Works perfectly thank you so much