Just to rule out user error, can you make a new project with the cli and see if the error is there.
If it is, can you test it against the nightly builds?
I tested against a brand new build. Doesn’t appear to be happening, but it is harder to tell when the bg is white as well.
Could just be an issue with updating from 6 to 9 possibly? In 6 to remove this issue I just had to get rid of the slide animation from the ion-view in the index.html file.