So I started fiddling with Fx3 today to see if it was some weird installation issue that caused the forward/backward arrows to not show up.
I installed it again, over top of itself. No changes.
I uninstalled/reinstalled. No changes.
Finally, I right clicked on the toolbar and selected customize. There were forward/back button to add. I dragged it up in there and all was good to go.
Why the hell was it not there by default is what I want to know thought!