I have tested the tear off panels on both Linux and Mac.
Panels "tear off" when single clicked above a math palette's dashed
line.
There is one inconsistency between the Linux panel and the Mac panel
in that the linux palette has a maximise icon whereas the Mac palette
doesn't.
This is a great improvement in math functionality and usability.
I have a problem with the Mac's LyX display.
When characters are entered from a math palette, the correct symbol
is not displayed, instead an English character or string is
displayed. For example, the math symbol greater-than-or-equal
displays as geqq.
However, View>PDF (pdflatex) does produce the correct symbols.
Roger