Does this work when adding the write:issue.property:jira to the Forge manifest?
According to the doc, the following scopes are required: OAuth scopes required : write:issue:jira , write:issue.property:jira
While you are at this, you might want to switch to the OAuth scopes: write:jira-work instead. I know that the documentation has not been updated yet but the deprecation has been stopped.
For reference:
I tried modifying the manifest by adding write:issue.property:jira as well using the write:jira-work with no success. I still get 403 as the response code