new piston feature causes sticky piston not to pull block correctly

With the new sticky piston feature MC-9342 (which works as intended, I know that) there is a bug. namely that a extended sticky piston can retract without grabbing or pull the block in front of it(and no it is not a obsidian block). This is a bug because previously a extended sticky piston always pulls the block. This bug makes it very hard (even harden than before) to make double and triple pistons extenders. and [mod] please, don't close or mark this post as duplicated because it is not a duplication of post MC-9342. It goes over the fact that the new feature (instantly retracting of sticky pistons) does not even retract to block by one block. And yes I used the search button and found this post [MC-11269] which is in my eyes not a duplication of post MC-9342 so is in my eyes closed incorrectly. I hope you understand my point and I would like to hear you opinion about it. If possible even that of Mojang since Jeb didn't answer Dico's question in post MC-9342.