Wayland is still considered as "in beta" for many linux distros even though Red Hat is credited as the founder. Compositing has been an issue for linux since about day 1 - it has always been considered a work in progress for whatever reasons from compiz to compon to enlightenment to wayland. My belief is that its been a moving target as graphic chips improved, starting with nVidia chips to Intel graphics up to today. You might want to try another window manager or destop environment with your Fedora. I don't think Firefox can be expected to alter the effects of webpages in general although it has smooth and auto scrolling, the use of which always escaped me. linux always has multiple ways to do the same thing so ask around.