I think the first reason is a legitimate criteria. Any app that has a window is definitely expected to have a minimise button - it's very strange behaviour if it doesn't, and even games that normally run full screen should have this button when placed in windowed mode.
The second reason certainly sounds infuriating, but it's odd that the reviewer had access to an OS update that you didn't. In general, a crash on the latest OS update is a good reason for rejection because you're going to have to fix it sooner or later anyway. Better to fix it now rather than have to come back to it later.
The second reason certainly sounds infuriating, but it's odd that the reviewer had access to an OS update that you didn't. In general, a crash on the latest OS update is a good reason for rejection because you're going to have to fix it sooner or later anyway. Better to fix it now rather than have to come back to it later.