Play on one SqueezeLite launch playlist on Squeezebox Radio

Hello,

I have 2 Squeezelites (One RPI3 Stretch with Squeezelite headless, one RPI3 Stretch with TFT screen and Jivelite + Squeezelite - last github versions from ralph-irving) and a 7.7.3-r16676 Squeezebox Radio, LMS 7.9.1~1513951369. When I open a playlist one my Jivelite + Squeezelite RPI3, sometimes, it launches the playlist on the Squeezebox Radio. Sync is disabled, each Squeezelite is started with its own mac address (the one from the Ethernet interface). Could you give some hints how to debug this?

Thank you.