Cant use Cmd+C, Cmd+V in the Audition CEP plugin

We're seeing an issue with registerKeyEventsInterest() on macOS in an Audition CEP panel.

On panel initialization, we call __adobe_cep__.registerKeyEventsInterest() for all relevant key codes (including metaKey) and handle Cmd+C/V/X/A ourselves (execCommand() / navigator.clipboard) . This works correctly, we able to copy and paste the text inside the panel.

However, after the user performs a Copy operation inside Audition itself (e.g. Edit → Copy or Cmd+C on a clip), the panel stops receiving Cmd key events entirely. Clicking back into the panel or re-focusing an input doesn't help.

Is this expected behavior? We don't see this issue in other Adobe applications, such as Photoshop and Premiere. Is Audition expected to behave differently?

OS: Mac

Audition version: 2026

Plugin framework: CEP