I use a pixel pets site where you have to click pets to feed them. The old version let me open links as tabs in a new window and close them all with a single click on the red X of the window and it worked perfectly for me; with the new one, I can only open 30 tabs in the same window and then close them one by one.
I used to revert to version 2.4, the last one working properly, but it has stopped working.