Slow mouse scroll speed only on some websites while mouse wheel scroll works fine on others. Issue does not occur for same site on Chrome browser.
Issue: Mouse wheel scroll is slow for a few, specific websites.
Build: Firefox Developer Browser 70.0b10 (64-bit)
Description: When navigating to websites such as https://rogue.studio, the mouse scroll wheel scrolls the page very slowly. However, with no settings changed and using same browser instance in different tab, other web pages (such as support.mozilla.org) operate as expected with default mouse wheel scroll speed.
Environment: Firefox Developer Browser. 100% zoom. Resolution/Window Size: 1806 x 900px
Expected Behavior: Mouse wheel scroll has a consistent speed across all websites.
Attempted Fixes: Disabling Smooth Scrolling. Setting general.smoothScroll.msdPhysics.enabled to true.
Notes: I've noticed this behavior on heavily 'designed' sites such as https://rogue.studio. I'm not sure if there's a specific element or script that's causing the change/slow down for the mouse wheel scroll speed, but could be related as I've noticed this issue on this particular 'kind' of site.
I think I may have found the root cause of this issue. It appears that the sites where I've had this issue (rogue.studio and nicholasmunt.com), the overflow-x and overflow-y values are both set to Hidden.
When these values are set to be displayed, the issue resolves and I'm able to scroll at the default mouse wheel scroll speed.
Is this overflow: hidden issue a bug with Firefox?