On an evening of firsts at Tynecastle; Hearts first match back in the SPL, Postecoglou's first competitive domestic fixture in charge and the debuts of both Starfelt and Furuhashi, it was also Celtic's first loss of the season.
We can talk about poor refereeing decisions - contributing to disallowed goals and missed cards - but until Celtic sort out their own indiscretions, this will not be the first time you read about our failure to pick up points when it matters most.
It's hard to convey sometimes just how far Celtic have regressed in the last 12 months but when last season's fourth choice right-back is scoring the goal to get us back into the game against a newly promoted team, days after failing to progress in the European qualifying stages against a club with 24% of our wage budget who also play Coldplay when they score, you get the idea right?
Despite the changes at the back where Nir Bitton returned at centre half, partnered by new signing, Carl Starfelt, in front of Scott Bain, it was again defensive mishaps that cost us dearly.
You could argue that the debutant was at fault for the first goal, scored somewhat ironically by former Celt, Gary Mackay-Steven. Giving Starfelt the benefit of the doubt, I actually think his eagerness to impress contributed to him getting too tight and needlessly going to ground against Liam Boyce, who evaded the challenge before Bitton nipped in and stabbed the ball in the path of the aforementioned Mackay-Steven at the back post.
Making the most of the 70% possession, Celtic equalised via the left foot of Anthony Ralston who played a slick one-two with Edouard before slaloming into the box and slotting past another former Celt, Craig Gordon.
Gordon would have the last laugh however, as the keeper, who accepted an even bigger pay cut than the one that Celtic offered him at the end of his deal to join his former club, made two top saves to deny both Forrest and Starfelt at each of his posts.
This is after the man deemed more valuable between the sticks than him by the board, Scott Bain, was positioned questionably inside his own six-yard box as John Souttar guided a header past him in the 89th minute.
Of course, this irony only rubs salt into the wounds of a Celtic side now without a win or clean sheet in three competitive outings under our new manager.
Ange now has to pick the boys up again for two massive fixtures in the next seven days with a midweek trip to the Czech Republic in the Europa League qualifier before the return of fans to Parkhead for the visit of Dundee.
The warning signs were there and unless our ability to defend set-pieces and wastage in front of goal improves we could be looking at the worst start to a season in recent memory but would any of us be really surprised?