The latest update Chisel-MC1.9.4-0.0.6.48 is causing several headache to the following mods:
Thut's Elevator
Malisis Door's
Storage Network

Most if not all the blocks are going invisible and downgrading the update fixes the issue!
I have addressed all the mods listed and have come to the conclusion something changed that caused this issue!

What mods do you have? All of them?

No optifine?

Yes! Sorry!

Can not run mc without it!

Yes and then some!
I have only loaded the select few and have done several trouble shooting, I had help from the owner from Thut's that helped me determine this!

will do, doing that now!

I can try leaving all and removing optifine that I can do?

Please try seeing if the problem persists without Optifine

Removing Optifine does not help! The problem still persists!

Also I noticed your file description still shows 1.9.4 but is released for 1.10.2 nothing major though!

Yes, the 1.9.4 mod jar works with both 1.9.4 and 1.10.2. I'll personally look at the issue later

I have also notified all the mod authors as well! Thut is seeing what he can do on his end, not sure if that will help much though.

It also affects Ender IO facades painted like chisel blocks.

Revert to previous release for now. Fix is in the works.

I should add it is also affecting redstone paste and MalisisSwitches more to be discovered!

I can't downgrade Chisel to prev. 6.46 version! My world is crushing!! Can you fix the trouble? 6.48 still not working with Malisis doors and seems to conflict with other mods as well(((

I noticed that build 48 was pulled from CurseForge after already downloading it to use in a modpack, so ducked that one.

May be related, Blood Magic mimic blocks used on Chisel blocks causes them to render invisible, though this happens in versions of Chisel prior to 48. Currently running chisel 46 with this happening (No optifine)

Should be fixed by .50