What should happen: The tripwire connects on a glowstone block.
What actually happened: The tripwire connected but for a really short time (1 tick) then disconnected.
Steps to reproduce:
1-Put a glowstone/ice block.
2-Place string arround the glowstone/ice.
3-Put a string on the glowstone/ice.
MC-570 floating tripwire doesn't mix with non-floating tripwire - it will just pop off