YYC will not change anything with the graphics API.
It may be an issue with the tilemap culling. YYG recently fixed something internally and now tilemaps are culled correctly according to the camera. When the normal maps and materials made with tiles are drawn there is no camera applied.
Do you have normal maps and materials set for your tiles?
Without normal maps and materials there is information missing in how things are rendered. This is a PBR lighting solution after all.
If you were to use an earlier version then anything around March 2023 or earlier should be when the last Eclipse update was.
I will release a fix soon I think so that the issue with camera culling tiles is fixed. I need to replicate it locally first however.