puppy potty training relapse

my 6-7 month puppy (rescue) last had an accident in the house early october, when she had zoomies and pooped on the couch in the family room. it's been a good 2 months since then. we haven't really let her in the living room ever, but have recently let her go in that room. it's also where the christmas tree is. when she's in a space in the house that we usually block off (like the living room or upstairs), she gets zoomies. last night, i was out and she got zoomies in the living room and destroyed christmas ornaments and pooped on the couch. (she wasn't home alone) is this a matter of her not being used to the space and not being calm in the space? i have been working with her and making her stay in a down position calmly and rewarding her. also, i've been letting her explore the space on the leash or supervised. i'm wondering if it's normal for a puppy to get poop zoomies in a new space like this. she doesn't have any separation anxiety (if i bring her to daycare, she forgets i exist and she doesn't whine when anyone's away).