Scrolling through the docs has become very slow
The problem is the same as the title states. 

While scrolling through the docs, say [Pipelines](https://huggingface.co/transformers/main_classes/pipelines.html), it takes a lot of time to scroll down, which I think was not the case before.

### Who can help
<!-- Your issue will be replied to more quickly if you can figure out the right person to tag with @
 If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**.
 Please tag fewer than 3 people. -->


@sgugger

Not sure what you mean, I can scroll through that page at any speed I want.<|||||>> Not sure what you mean, I can scroll through that page at any speed I want.

Okay.

![Untitled_ Sep 26, 2021 11_37 PM (1)](https://user-images.githubusercontent.com/40426312/134819273-e3370e43-a433-47cd-847f-96296becad65.gif)

A screengrab while scrolling through the website.

What might be causing this?<|||||>Maybe restarting chrome is necessary? I don't have it installed locally, but everything is fine on Edge.<|||||>I also have this problem on chrome. Restarted it and my computer but it didn't fix it.
<|||||>That's interesting - I use chrome and an array of chromium-based browsers but have never encountered this issue. Could this be linked to one of your extensions? Does it happen on older versions of the docs? Does it also happen on other docs, for example, our datasets docs, or the PyTorch docs which also use the same backend?<|||||>I've disabled my extensions and tried but still doesn't work. Sorry I am pretty new to programming so I don't know how to open up older versions of the documents. Do I go to a branch that is at an older release?
Also I did notice that when I used my trackpad on my laptop it works fine. But I have a mouse connected to my laptop and when I use the scroll on that, it causes the problem. Are you using a mouse or the trackpad?<|||||>I am using an external mouse in the video, not the trackpad.
So I'm not exactly sure why it works with a trackpad but not a mouse, but here is a video of what seems to be happening. When I scroll over on the left hand side with the table of contents info, it works fine. The left scrollbar is separate from the right scrollbar. But when I scroll where the actual information is, the left and right scrollbar scroll at the same time. But once the left scrollbar hits the end, the right scrollbar scrolls without it slowing down. I hope that makes sense from the video. I'm not sure how big of an issue this is but maybe having the 2 scroll bars work separately might help?

https://user-images.githubusercontent.com/70382249/135101581-158d869b-5cfe-42ff-b4fb-a5c48147c7a1.mp4

Edit: @LysandreJik  Sorry if I am not supposed to ping, but was just wondering if this is a big enough issue to be fixed or it's only an issue for a very small amount of people <|||||>We're in the process of moving away from Sphinx in the next few weeks, so as it seems to affect only a small number of people *and* we'll have a new frontend in a couple of weeks, we'll focus our efforts on getting the new frontend out as early as possible. Hope that's fine!<|||||>I experienced it as well on Chrome 94. I realized if I turn off smooth scrolling the stuttering scroll issue is gone.

![image](https://user-images.githubusercontent.com/15170425/135848988-66e51308-b51b-49c8-8833-6e5aca6b85ec.png)

_Disabling Javascript also seems to fix the stuttering scroll issue_

Although another issue appears i.e scrolling the main content will scroll the sidebar as well.
And it seems another person experienced that as well https://discuss.huggingface.co/t/docs-sidebar-scrolls-while-scrolling-main-content/10387<|||||>Thank you for the heads up @redwizard100!<|||||>This issue has been automatically marked as stale because it has not had recent activity. If you think this still needs to be addressed please comment on this thread.

Please note that issues that do not follow the [contributing guidelines](https://github.com/huggingface/transformers/blob/master/CONTRIBUTING.md) are likely to be ignored.<|||||>Is it still the case @ekdnam, @DeepP2667?<|||||>It works great now. Thank you!<|||||>AFAICT, we didn't change anything :smile: <|||||>Oh, I'm not sure but it works now<|||||>It might have been an issue with a chrome or Sphinx version, but glad to hear that it works now!<|||||>This issue has been automatically marked as stale because it has not had recent activity. If you think this still needs to be addressed please comment on this thread.

Please note that issues that do not follow the [contributing guidelines](https://github.com/huggingface/transformers/blob/master/CONTRIBUTING.md) are likely to be ignored.<|||||>Closing this as stale but please give us feedback on the new doc frontend!

Announcement at https://twitter.com/huggingface/status/1466462283576533003