The Bug:
When uploading a world to a Realm, the progress bar visually extends downwards far beyond the normal height of the bar.

Steps to Reproduce:

1. Own a Realm.
2. Open the Realms panel by clicking the "Minecraft Realms" button from the title screen.
3. Click on your own Realm.
4. Click on the "Configure" button on the bottom of the screen.
5. Select one of the 3 world slots and click "Reset world", then "Upload world"
6. Select a world to upload and click the "Upload" button on the bottom of the screen.
7. Note the extended height of the progress bar that is much longer than it was in previous versions.

Observed Behavior:
The progress bar visually extends down the screen much more than in previous versions.

Expected Behavior:
The progress bar stays at a fixed length similar to previous versions.