The switch pipes are not working as intended. They require a redstone signal (lever in this example) to repeatedly be flipped back and forth before it will actually connect and disconnect. Test case is as followed.

Disconnecting the pipes

Step 1:

Placing a quartz pipe on either side of a switch pipe with a lever in front.

Step 2:

Flipped switch. Texture on switch pipe changes. Error is that pipe does NOT disconnect

Step 3:

Flipping the switch again causes the texture to change, but now the pipes seem to be disconnected yet still have a texture glitch on them.

Step 4:

Flipping switch once more shows the pipes PROPERLY disconnected and with expected functionality.

Note: It took 3 "flips" for it to properly disconnect

Connecting the pipes

Step 1:

Flipping the lever causes texture change, but nothing else.

Step 2:

Flipping lever again seems to cause the switch pipe to attempt to connect with nearby pipes, but no successful connection is made.

Step 3:

Flipping lever will cause the switch pipe to properly connect to it's surrounding pipes.

Note: It took 3 switch flips to get them to connect properly from the "disconnected" state.

Other remarks

• This same bug is for fluid pipes as well.

• It always take 3 "flips" for it to work, regardless of how many pipes is surrounding the switch pipe.

• It doesn't matter what pipes are connected. (Stone vs cobblestone vs quartz...etc)

• There's also a spew of bugs with this when I attempted to use redstone dust with lever where the switch pipe will rapidly switch state, but return to the "connected" state regardless of the redstone input being "on."