Upvotes register but not always are displayed in app

Upvotes on both posts and comments show in the UI when clicked but disappear when view is refreshed. 0.10.10 on S21. Steps to recreate bug:

• upvote a post it comment - upvote registers in app by first displaying a brief rotating animation and a blue circle to indicate that the item has been upvoted
• pull down to refresh the post - view is reloaded and the previously upvoted item is no longer marked with a blue circle

I have tried this on different instances and using different accounts. The same functionality works using Jerboa. Please advise

Edit: I tried wiping the app data but the problem persists.

Edit: changed title to better reflect the problem.