Solve the white line problem

Solve the problem of the white line that appears at the bottom of the screen!
is it just because I tried it from the Thunkable application as a kind of preview or will it remain like this??

This has been reported a few times. I’m not sure what the current status is but since you’re experiencing it, you might want to take a look at these. Also, are you using a navigator on your screen?

Doesn’t it disappear after that?