When trying to view revision history of OKR's, I see: "Parser is unable to parse the response" message.
Working as designed by Product Management.
Your feedback is welcome, please use in-app feedback to reach the Product Management team.
Only Workspace admin and Sub admin can see revisions independent of OKR admin flag.
A user with Project Admin, Editor or Viewer permission won't see revisions also independent of OKR admin be enabled or disabled.
We are updating the message on revisions page to let user know.