Can confirm that this is happening on the iPad app too:
iOS 10.2.1
Skype 6.34.0.105
Confirmed, this is a bug in Skype iOS v6.34.0.105
pending investigation by Skype Mobile team
We are rolling a fix for this issue into a future client release. For now can you try ensuring that the profile of the attachment is stated. I.e.: on the same level as the url, one should specify “profile”=“audio”.
@nickcordrey thanks for the update
Looks like the Skype update that went out yesterday/this morning has fixed this issue. Thanks @nickcordrey.