Hotmail.com/Outlook.com all of a sudden have to double-click and more

I made the mistake of saying to use outlook when setting up a new test laptop. It started putting stuff on onedrive and outlook came up. I had to uninstall onedrive, close down the outlook, etc..

Since that point when I’m on my main computer and go to outlook.com and log in like I’ve been doing for a decade, everything changed. First, I didn’t have reading panes enabled, they were, so turned that off, but now when clicking emails they don’t come up, I have to double click, worse is then when the email is open and it has a link to click, firefox would block it, so I fixed that, but when clicking a link the popup window stays in the foreground, I have to close that box to get to the tab that opened for me.

The way it used to work, single click an email, opens, then click the link and voila you were there, then you’d close that and then close the message. Is there a way to get that behavior back?