I deal a fair amount with middle-english texts and IPA transcriptions.
While it is possible to insert unusual unicode characters such as the yogh (ʒ), the only way I can find to do it is copy it from a reference web page and paste into the lyric popover. As soon as I paste it, it replaces the whole text in the box and moves onto the next lyric placement. I can then go back and add other characters, but it would be useful if there was an easier way to do this!
As a matter of interest, Sibelius displays the same behaviour when pasting symbols in.
Using the Mac version. Any thoughts/tips welcome.