Scroll bar gets hidden by worlds

The scroll bar gets hidden by worlds.

Steps to Reproduce:

1. Have at least 4 worlds in the world selection screen (if using Classic UI, only 2 worlds are needed)
2. Swipe up
3. Observe the scroll bar

Observed Results:
The scroll bar appears behind the button with the pencil icon.

Expected Results:
The scroll bar should appear in front of the button with the pencil icon.