Tripwire won't connect without a block beneath it and breaks when that block is removed.
Linked issues
duplicates 1
Comments 2
Duplicate of MC-4147.
MC-8412
Tripwire won't work unless there is a block beneath
Resolved
Duplicate
1
Can't mix whether the wire and hooks are supported by blocks or air. If the hooks have no blocks then the wire will work with no blocks under it, but if the hooks have blocks then the wire needs blocks.
But yeah being able to mix and match would be nice.