After opening web pages from Adobe sites, they are refreshing by itself after loading the page.
Do you experience it as well?
I have never seen that.
Has it started recently?
If it has, it may be related to the other issues after the sign in change.
Like Jacob, I have not observed such behavior.
What browser and what OS, as that might hold a clue?
Are you talking about forum pages (forums.adobe.com)? Or the main Adobe web site (adobe.com)?
I experienced it for sign-in page for forums .. and also some other pages like https://creative.adobe.com and download page for DNG profile editor on the main site.
But, I've checked them now and everything is normal,
Maybe, I'm wrong ... sorry.
Always worth checking.