Bookmarks not shown at all on brave@android

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Description of the issue:
After updating to V1.64.113 the widget showed the folder “mobile bookmarks” only. After removing the widget and reinstalling it, not bookmarks are shown at all. The bookmark menue inside the app fails to show any bookmark - it only reads: “You’ll find your bookmarks here”. You can see a constantly rotating circle. In fact there are bookmarks, as I have successfully exported them to a file. They are just not shown.

How can this issue be reproduced?

Expected result:
Show bookmarks in the app and in the widget as wello
Brave Version( check About Brave):
Mobile Device details
Fairphone 3+, Android 10 (/e/)
Additional Information:

The problem has solved itself for the time being. Quite surprisingly, the bookmarks appeared in the widget and in the app again. I had tinkered a bit with another widget (windy), adjusting its background activity permission. I really do not know whether this is related.

Please let us know if the issue occurs again.