I actually happened to fix this just last night due to a similar report on the SciCraft Discord.
Here is the build with the fix: https://masa.dy.fi/tmp/minecraft/mods/rift_1.13.x/litematica/litematica-rift-1.13.2-0.0.0-dev.20190107.025216.jar
I guess I'll also upload this to CurseForge, although I was going to work on other fixes and stuff first...

thx.
btw, you could write fix #4, not Fixes #4, for this issue to be automatically closed.

I was so sure I had used Fixes before successfully... maybe it was just Closes. >_>