Finally, after wracking my head for so long, I’ve figured it out thanks to @Grooved 's reply on another thread.
IMPORTANT THING TO CHECK : on Tidal, some album have different version, even several MQA version, with some having both MQA 24/96 and MQA 16/48… you wont see it in the Audio Dashboard, but from the led location only, or from a software like Roon or others, but not from the Tidal app.
There’s nothing wrong with Tidal nor my Tone 2. It’s just that some Tidal MQA tracks are 16 bits/48kHz. I checked this by skipping through an MQA playlist while looking at the LED. Some tracks give 2 LED bars because it’s 24/98, some only one bar since it’s 16/48.