sticky piston does not retract glazed terracotta blocks

Put the summary of the bug you're having here

please note i have seen many issues logged for this over the last 2 yrs however as there is no way to report an occurrence of the same issue by looking at these i am submitting another. your status of "resolved" is obviously incorrect.

What I expected to happen was...:
Describe what you thought should happen here

was setting up a sticky piston to push/pull glazed terracotta.

What actually happened was...:
Describe what happened here

Sticky piston would only push glazed terracotta not pull. other blocks put in place of glazed terracotta would retract fine.

Steps to Reproduce:
1. Place sticky piston
2. place glazed terracotta in front of sticky piston
3. place lever or button to activate piston
4.piston actives - pushing glazed terracotta block out
5.piston retracts without glazed terracotta block