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This is normal.
When you connect to Trezor, it sends a question to the Suite: „hey Suite, do you have a passphrase that I can use?“
At the same time, **Trezor screen displays this message**. If you had a hidden wallet enabled, Suite would show you the „enter your password“ dialog. So if you’re looking at Suite, you know what to do; and if you’re looking at Trezor, it tells you to go look at Suite.
Now, if you _don’t_ have a hidden wallet, Suite quickly sends back: „nope, no passphrase, just go ahead to the standard wallet“.
So the message can be visible for a couple moments and then disappears. Maybe the new Suite update made it slower in some place? So the message is there for a little longer?
You _can_ get rid of it, if you go to settings and disable passphrase.
But I recommend that you keep it on — if you ever decide to use passphrase in the future, you will have plausible deniability. „Yeah, passphrase is enabled, but that’s the default, i never used it and never got to turning it off.“