I was making cool slopes, when one of my collapsible blocks started to collapse backwards.
I tried to replace the block, it didn't work......
I have a sreenshot to prove it.

2016-05-13_20.01.54.txt
to view it, change the .txt to a .jpg or .png, I couldn't upload the .png or .jpg itself.

That's the inverted version. It normally does that when you click the bottom of a block to place the Collapsible block.

oh
srry

derp