I just re-installed chisel as there is a way to make it work with ProjectE now and when ever I chisel glass it gets a solid grey texture instead of clear please see screenshot attached -

I installed Chisel recently and have the same problem. Texture is see-through on my hot bar but when placed is a solid block.

Did this ever get fixed? Or was it just ignored and closed?

This issue is 4 years old and for a version we no longer support. If you are having a similar issue please open a new report.