After using 1.7.0. extensively I left the app open overnight and through the next day (with no documents open). When i returned tonight Photo was unresponsive.
I checked Activity Monitor and it showed Photo consuming over 70 GB memory. Note that Publisher was also running at the same time – any connection?
Similiar things happened during the Beta, but at that time the app also consumed all virtual memory, and subsequently all free space on my startup SSD. This didn't seem to happen this time with 1.7.0. The disk looked normal, although the Photo memory use reported by Activity Monitor looks extreme.
Mac OS 10.14.5
Mac mini
Intel Core i7, 3 GHz, 16 GB