The plugin gets slower and slower with each update, this time it doesn't work at all. When I try to save a pin, I get a message that I need to log in first....

永遠にログインできないエラー出てるみたいですね

It sucks. Keeps asking to sign in, even though it is.

Не могу сохранить, требует авторизоваться. Захожу, но все равно не сохраняет.

Не сохраняет, а каждый раз предлагает войти в аккаунт. Каждый раз вхожу, но всё равно ничего не сохраняет.
Doesn't save pictures, offers authentication. After authentication everything is the same.

Just straight up didn't function at all

It simply did not work. which is a real shame as it always worked on Chrome.

El botón no funciona.

The button never worked for me—I'd click the button and nothing would happen.

The icon on the upper right is annoying. It is exactly where some pop ups have the close ("X") button. It is also at the exactly same place as the Watch Later button in YouTube, so it is hard to use YT's button because of Pinterest's icon with the magnifying glass.

Stop auto scrolling to the top in twitter when we pin images in there.

Nine times out of ten it doesn't work so it gets a 1/10

лично у меня не работает

Slowed down the browser immensely.

Doesn't work

does'nt work half of the time...

Just didn't work at all for me.

Hit & miss whether it works or not ... and Pinterest should have no business accessing my bookmarks.

As others have mentioned, what's with the new permission to "Add and modify bookmarks"? No thank you.