From memory that's how it works. I'm unsure if there is a design that uses bluetooth and powers up on demand.
In the past, I've seen HDtech and others reveal this issue and ask to change over to optical.
Are coonect via Bluetooth and working good.
If i close the TV with the remote controller also the Soundbar goes off.
BUT, if turn on the TV , the soundbar does NOT power Up!
(I can remember that this has also worked in the past)
Any suggestion ?