Brave rewards crashes Brave mobile on Android

Description of the issue:
Brave on Android will stop working when Brave rewards is activated.

Steps to Reproduce (add as many as necessary):

  1. Activate Rewards using about:flags
  2. Access the rewards settings

Actual Result (gifs and screenshots are welcome!):
Brave crashes. Any attempt to restart Brave will result in an immediate new crash.

Expected result:
No crash.

Reproduces how often:
Every time.

Brave Version(See the About Brave page in Settings):
1.0.89

Mobile Device details
Samsung SM-P900 tablet
Samsung SM-J500FN mobile

Android/iOS Version
5.0.2
6.0.1

Additional Information:
German locale is used.
If all data of Brave is deleted (not just the cache) including all bookmarks Brave will restart just fine.

Another device showing the same issue. Edited the bug report to include the second device.