My "Layers" Trey/Panel is always missing. My workaround is to maximize window - green button top left of screen - and then the Trey/Panel appears. I then resize the screen again. I have to do this every time I open the file.

Thank you, Dave, for the quick response and explanation!

Thanks for quick reply. I'm running 2017 on Mac Sierra 10.12.1 . I guess it's been awhile since I updated my profile )).

I can not get extension lines to to resize simultaneously when moving extent point. If I rotate the the dimension it works fine. If I return it to original rotation it does not work. Resizing the lines individually works fine. Any input would be most appreciated.

Thank you

I've been having the same issue. My work around has been to collapse all other open trays and then toggle the green resize button - top left.