Just played for the first time (with Sukkhon relationship) and really enjoyed! Trying a 2nd play through differently but with Trans off this time, but I still got a phone call in a car before the pool as though I was dating Sukkhon. There was also a bit in the yard where Yoon is remembering and it had an image of the car scene, which hadn't happened. Not sure where to report a big, so thought I would mention here.
Also, if anyone has an issue with the Mac version not opening and saying it is damaged, unzip again using a 3rd party app like the Unarchiver rather than the built in Mac one, and that should sort it out. You still need to open it twice though to get the option to actually open it.