@menion,
are there any new restrictions to see external themes in the theme selection (overview)?
I can´t see my newest theme, but all older (with other themes more than 60!

)
if I copy for test an older "theme".xml into new folder. It works, shows all icons like hike, bike ,city ...
With a trick, change theme with an old xml and copy the new xml into the folder before clicking on hike or bike p. ex. the new theme works, but Ican´t see it any longer in the list.
It´s a Marshmallow phone.