Bluetooth switches on by itself

Hi,
I have Uniti Nova and I have encountered a recent problem (it may have appeared after the latest firmware update).
I don’t use Bluetooth and I have it switched off (open pairing also switched off).
However, from time to time, sometimes a couple of times a day, the input switches to Bluetooth Ready to Play screen.
I know, we are surrounded with Bluetooth devices and I tried to turn off Bluetooth on all of them and it happened again. Sometimes, it even switches Nova on from the stand by mode.
I know I cannot control if some of the neighbours is using it, but still, if I have switched it off on Nova, I would expect no connections happening.
Anyone else with the similar experience or possible solution?

I posed a similar question last year. No one offered a solution:

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