Selection Hiding
An approximation of v0.45 Building Tools’ hiding functionality.
You can reach and select through hidden blocks, and still see them and select them with drag selection.
Press [LCtrl]+[H] to hide selected blocks.
Press [LAlt]+[H] to unhide selected blocks.
You can also use the eye buttons on the transform tools.
You can rebind the shortcuts in the mod config files.
Place bugs in comments with instructions on how to reproduce them.
(Full disclosure: I have no idea what happens if you change skins or turn on cluster mode while blocks are hidden, and I suspect it’s not good.)