Topic category: Troubleshooting, bugs, and solutions
I noticed this issue and asked here.
You can read how i fixed it, long story short my reccomendation is to automaticaly add custom wall blocks in the vanilla "walls" tag, this is needed so vanilla walls and panes will try to connect to custom walls. Plus the program should add one line in the code ( you can see it in the first post i created ), this line is needed for the custom walls to try to connect to glass panes.
This should be an easy fix for you.