I've been hearing 2023 is the Year of the Linux.

Joking aside, maybe try making a new account then to see if that triggers it?  

If the browsers, OS, java, router firmware have all been updated AND cookies and cache cleared AND it happens at multiple locations on different setups it could be account specific.  

Good luck on figuring it out or getting  seeking alpha to hunt down this bug.  Its super annoying so you have my sympathy.

Different browser?  

Update windows?

Different location but same account to see if it's your router?

same location but new account to see if it's account specific?

Try this, clear your cookies and cache.  

Update your browser - This is what fixed my problem

Reboot your computer

Same here. I open up 20+ tabs from following so many conversations and reading so many articles.  I even click and hold but that doesn't stop it.  I pay for multiple subscriptions from SA yet I can't use it.

Same here for me.  Comments aren't showing for some articles.  I get email notifications for new comments on older articles and only a few of them showed the comments.