But the problem is you can't drag an app to a folder that's on the bottom right of another page without first moving the folder somewhere else that's not bottom right.It's not a bug. The folder does not disappear. It's moving to the next page when you slide another app onto a full page. And when you slide that app back to page "2" that fold goes back to its original spot on page "1". That is why you think it disappears.
But the problem is you can't drag an app to a folder that's on the bottom right of another page without first moving the folder somewhere else that's not bottom right.
It's definitely a flaw in their arrangement system. Whether it needs to be fixed is another matter.
Your understanding of 'bug' is strange.It might be a flaw in the arrangement system, but in no way is it a bug like the OP claims it to be.
Your understanding of 'bug' is strange.