It seems likely the problem is with Twitter as it continues to spiral. Although, I've been have a weird issue with Medium of late.
It seems to eat up the browser connection. It's only Medium doing this. I can only open and read one Medium link at a time. I cannot move on to another link, not even within Medium. I must quit the browser and open it again to get another Medium notification to open. I cannot even move on to a link outside the Medium platform from an open Medium page.
However, if I quit the browser, I can launch it again. Then I can browse all of my other platforms. I can even having multiple windows open and switch between them. But, if I open one window for Medium, everything freezes up and I have to quit the browser and start again.
I don't know if it's something with my Mac. But, it seems doubtful since everything else works just fine. I've been having this issue since around the time they put out that newsletter about the coming changes to the platform.