@ Bob
It isn’t just Chrome, but Google Chrome on Android, so it is an issue of viewing the forums via a mobile. There are I believe some other issues when viewing the forums from a mobile.

@ Perplexed
What happens if you view the forum using the WAP2 option - https://forum.avast.com/index.php?wap2 ?
Cancel that suggestion I have just tried it with a Windows desktop option and the dates aren’t their either.