I was making a firework shooter, when I broke the signal to a piston. However, the piston was still on. This is related to my "piston not retracting" bug report.
Related issues
Attachments
Comments

[media][media][media][media]

As you see in my attachment, there is no reason for the piston to be active.

You are probably thinking I hid a redstone torch under it, but why don't you try breaking a piston signal?

Works fine for me. (See screenshots.)