Using Bongos AB. I have all my action bars that have spells hidden. I keybind everything so no need to see the buttons and with a CoolDown addon, there is zero need to see buttons at all.
Anyhow, with bongos action bars hidden, if a skill is used with a cooldown on a hidden bar, oCD doesn't pick it up. If a cooldown is ticking down and I make my action bars visible, oCD sees the cooldown, adds the skill to the oCD bar with the correct duration left on the cooldown.
Quick work-around: you could un-hide your Bongos bars and set the transparency to 0. :)
Hmm, I had a similar experice when using DAB and having all the buttons hidden, things woudn't be picked up. When there was Bartender support it worked fine. Thanks for the work.