If you can reproduce the issue on a PC using the Windows version, we'll call it a bug.
If you can reproduce the issue on a Mac using the Mac version, we'll call it a bug.
Installing the Windows version on a Mac is not using the software as it was meant to be used. We're not calling it a bug - we're just calling it impatience
Once you get your Mac version from Steam, please report this thread and ask for it to be reopened if you still have the same problem.