Public posts no longer rendering in profile feed after page refresh (UNA 10.1)

Dear Developers,

I have come upon a bug/weird behaviour in UNA 10.1 whereby, when I have made a post in the public timeline at the homepage, it is visible at the public feed. Afterwhich, I proceeded to the profile feed of the user who has just made the post to the public feed, upon entry to the profile, the post that was made to the public feed was visible at the profile feed of the user. Upon a refresh of the page, the profile feed will no longer show posts made by the user in the public feed and only show posts made by the user in the profile feed. May I know what is causing this? Likewise, if I go back to homepage and back to the user profile page, the post made in the public feed is no longer visible in the user profile feed.
I have installed a brand new version of UNA 10.1 and the issue remains. I have also tried in UNA 9.0 but this behaviour was not in UNA 9.0, no matter how many times I refreshed in UNA 9.0 the posts made in the public feed was still visible in the profile feed. In addition, I have also found out by clearing the cache in UNA 10.1 and refreshing the profile page, the post made in the public feed will come back however it will still be gone after refreshing the page again. May I know what is causing this and whether is this a known issue? Is there any way that I would be able to resolve this behaviour in UNA 10.1?
Steps to replicate:

1. log in as a normal user
2. Create a post at the public timeline
3. Visit the user profile and create a post at the profile timeline
4. Refresh the page after creation of the post at the profile feed
5. Post that was made in the public timeline should disappear from the user profile feed