You didn’t get +0 pinnacles. You got +1 pinnacles that happen to be in a slot that didn’t advance you any farther. Try endgame activities for +2 pinnacles.

If you have any piece that is 1259 max at the moment, then only +2 (raid, 100k nf etc) will drop at 1260. It’s frustrating, but that’s how it works. It took me 3 weeks to finally get 1260 legs for my warlock, the titan still needs the rag. Until I get that rag, anything but +2 drops give me useless 1259s

This happened to me too. Both strikes and crucible pinnacle drops were at level, not plus 1.

When you say engrams are you referring to the ones you get from doing the 8 bounties thst rahool decrypts? Because it sounds like you are and those are powerful rewards not pinnacles