I am using the Alexa skill Sleeping Jar for many years now, and I'm using it on my Sonos devices since day 1 of the Alexa integration.
Since the recent FW update 15.6 the skill no longer works correctly. The noises of the skill are played back in an endless loop, meaning they play until you stop it. This worked perfectly fine also on Sonos devices, but after the recent FW update to version 15.6, the playback ends after one hour. I'm not sure if this is the length of one loop, or if it's a limit within the Sonos code, but it definitely is an issue introduced by Sonos FW 15.6. The issue is present on all my Sonos devices, while the skill works perfectly fine on my Echo devices.
I am aware of the potential alternatives within the Sonos universe - none of them is an alternative for me. Let alone that I'm paying for the Pro version of the skill.
Thanks for looking into this.