Removing temporary error messages while loading a page

So far I've noticed:

1. "Unknown Account" is showing when going from one page to the notifications page.
2. "Sorry! This page doesn't exist. when going from a comment to the main post ("View the full content" link)

Steps to replicate #1 (closed)

• Browse to https://hive.blog and login
• Click on your avatar and click on "Notification"
• You should see a loading indicator but "Unknown Account" message is displayed instead until the page loads

Steps to replicate #2 (closed)

• Go to your notifications page
• Click on a reply notification
• Click on "View the full context" link in the green box.
• A loading indicator should display instead of the "Page doesn't exist" message