I'm not making this up. Just trying to help.
Here's my first 5 posts by time + engagement today. This is my personal account.
1 - friend, posted 10 hours ago, some engagement
2 - friend, posted 29 minutes ago, some engagement
3 - big account, posted 10 hours ago, engaging a lot with this photographer lately
4 - friend, posted 10 hours ago, some engagement
5 - friend, posted 8 hours ago, some engagement
It goes on like this... Not by date anymore.
I have not seen any change at all.