This is YouTube's new notifications pane:
It just clumps everything together in a difficult-to-read manner, and when I click on a notification to try and see the whole text it takes me away from the video I am currently watching, rather than opening in-the-frame like it used to.
Here's what it used to look like, and what it currently looks like everywhere else on google:
How do I get the older notifications pane on YouTube?
Best Answer
YouTube is unintegrating Google+, which is why the Google+ notifications had to go. You can still access them on Google+ (or any other gcon site, really), but that will probably stop working without warning when they cut the cord for good.
You cannot switch back to Google+ notifications on YouTube itself, but what you can do is: