If you use chisels for blocks, the red outline disappears, and functions such as Drawn Region and Line do not work.
The 1x1 chisel also does not work if the mouse is pressed continuously.
I'm using the fabric version

MC Version: 1.18.2
C&B Version: 1.2.87 to 1.2.90
Do You have Optifine: both with and without
I'm posting the previous one again because I clicked it wrong and completed it.