If a ship has a ion token can it perform actions that gain Extra movement? IE Boost or Barrel Rolls?

Should there be an errata on that because the point of the ion cannon is to fry the ships electronics and the ship needs to take a round to recover.

It may perform actions as normal.

Direct from the Ion Token card itself. Fluff expectations aside, the rules are what they are, and very intentionally so I think.

Although it does get a bit odd with the new Advanced Sensors - you could be ionized, and barrel roll or boost before your drift move. A bit odd, but again, not the least bit wrong as far as the rules go.