Briefly describe (1-2 sentences) the Bug you’re experiencing:
Hi, on the Timeline view, the horizontal scroll bar does not work well, and as soon as we move it to the left we go back several years, it accelerates all at once … and then we have to move the bar to the right.
Steps to reproduce:
Just try to move the horizontal scroll to the left.
Browser version: Chrome Version 71.0.3578.98
Hi @Julien_RENAUD and thank you so much for the report!
Our Team is aware of this issue; this seems to be happening when using your mouse scroll wheel, am I correct? One workaround is to drag the scroll bar instead, this should allow you to move back in time within your timeline!
This happens precisely when I use the horizontal scroll bar. I move a few millimeters and I move 2 years on the Timeline. Whenever I open a timeline, the first movement of the bar does that, and then it works properly. But as soon as I open a new Timeline it starts again.
Thanks @Julien_RENAUD, just to make sure I’m getting this right: you’re having this issue when manually dragging the scrolling bar (without touching your mouse scroll wheel, correct?
Yes I only click the left button of my mouse, and drag the bar on the left. I don’t touch the scroll wheel.
Thanks for the quick reply Julien and thank you so much for your patience here!
My apologies I got confused reading the bug our Team is working from. Using your mouse scroll wheel should allow you to avoid the problem (I think Shift + scroll allows you to scroll sideways). Can you give this a go and let me know if it works for you?
Another option is to use the little left/right buttons in the scroll bar to scroll sideways, this should definitely allow you to avoid the issue!
Looking forward to your reply! 
In fact I’m using Ctrl+Right click to move the Timeline and it works fine. But as there is an horizontal bar it is tempting to use it so you should fix that even if some tricks exist.
Thank you @Marie for your answers.