If a download is completed or currently downloading in the download bar in Chrome, the sidebar on the webpage keeps glitching and moving on its own.
I don’t know whether it’s to do with my screen size, or whether I have ROBLOX+ installed, but it has never happened before.
Steps to report a bug:
I cannot reproduce this in Chrome with the info/description available.
Then it must be my screen size, thank you for the clarification.
Well that would still make it a web bug because the website should work at all screen sizes. Adding information about the size of your window/screen could help, whether this happens all the time or rarely when the download bar is visible, the version of Chrome that you’re using, etc.
Updating to the latest Chrome seemed to have fixed it, thanks. 
I will post back if it happens again.