I’ve installed Yosemite on two of my Macs now. So far, so good. I’ve had a chance to use a couple of the updated apps that came along with it. This is a screenshot from GarageBand.
Do you see that little slider in the top left corner? No, not the big one, the little one. The big one is the master volume control. That little one controls the zoom level of the audio tracks. The farther you move it to the right, the more you zoom in. I don’t know what their UI designer was thinking. Why did he or she decide to put it in the same space occupied by the timeline? If the timeline were only a display, that would be one thing, but it isn’t—it’s interactive. I can click in it to place the playback head. Furthermore, the little arrow that specifies the end of the audio track sits up there. Can you see it? The top corner of it is peeking out above the slider. You are supposed to be able to grab that and drag it to change the length of the audio file you are creating. Of course, since it marks the end, it is always right there at the right end of the timeline, right under that slider.
That’s a rookie mistake—not what I expect from Apple.