[User 325245]

v4.1
- Fixed bug in testing that it tested bulb 3 instead of 4

you are too quick for me. Now I don't now if I conduct last tests with this new version but I was unable to reproduce this 'white strip' problem,even after restoring config file witch was used when problem was here and reactivating the strip for ambi. I remember that I restarted my phone yesterday before last tests, and now the box before testing on tv. maybe a restart was needed...
anyway, everything is working fine now. a big thanks for this powerful add-on.
by the way, your add-on works even if bulbs are forbidden to see internet ( firewalled from my router). since Mirai, it's a good tip to forbid access to internet for devices witch don't need it, like this bulbs. 

Great, glad you got it sorted. And yes, it uses the developer mode (LAN control) so internet is not needed. I also use tasker+send/expect combo on my phone and tablet to control the lights locally w/o Yeelight app.