meizu home button icon

hello,i purchased meizu mx4 about a moth ago and last night a weird problem came up out of nowhere.
A home button icon just like the one the phone has at the bottom of it appeared at the center of the screen and i cant remove it from there.
I tried restarting the phone but nothing happened.
Any ideas?

Meizu Pro 6

Sounds like you accidentally enabled the SmartTouch button.

Open Settings->Accessibility and turn SmartTouch off.

You can also turn SmartTouch on/off from the toggles that you get to by swiping down from the status bar.

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