Cascade curve editor - zooming is broken ?

my cascade curve editor somehow got screwed up and it’s always zoomed in a bit. Whenever I a do “fit to selected” there are still keys not visible, and I can’t see my horizontal timeline labels. I’ve tried resizing, moving the layout around, detaching the curve editor tab and re-docking. I also tried Window > Reset Layout, and also changing my screen resolution, full editor restart, even system reboot