This type of TImeline zoom has been reported before for Premiere Elements Mac. Is this a "it worked before but not now" or "it never worked before" type of issue for you?
Have you read the following Adobe document on the matter and the suggested resolution?
Please let us know if that works for you.
I am not sure what is going on with your thread. It appeared in the Premiere Elements Forum, and there were no replies when I went to
post what should work for you. When I hit the Add Reply button, I found your thread in the Premiere Pro Forum with 2 replies entered before mine.
Wherever your thread ends up, I will follow it so that you can get the specific information that you seek.
Looking forward to your results after you view the Adobe document on what appears to be your issue.
This message started in the wrong forum (Premiere Pro) so I moved it to Premiere Elements
There has been at least one other message that I replied to in the (correct place) Premiere Pro forum where my reply did not appear until I posted a 2nd time
There have been ODD things like this happening for about two weeks or do... I can't post a link to the discussion about that problem, since the discussion is in the Moderator's forum... but so far, I have not seen a reason or solution... only that the forum supervisor has informed Jive, and that no solution has come back from Jive