I noticed the closed issues pertaining to using LittleTiles with shader packs.
I did some research. Specifically previews not showing for tools such as the chisel and hammer. I observed a similar issue with Immersive Engineerings tank multi-block structure (the gauge that shows the levels).

I've compiled some screenshots of the issue.

Reducing or turning off settings (specifically) bloom and temporal AA) will bring the preview grid back. A possible solution (workaround?) could be to increase alpha values for the lines drawn in previews so they don't get torn apart so bad during post-processing.

Actually this is an issue of the shaderpack and not the other mods. There is nothing I can do about it sorry :(