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The following bugs occur in versions 3.2.0 and earlier.
If a checklist was added/edited/deleted by a user who did not have permission to edit that Jira Issue, it would appear to be added/edited/deleted in the UI, but not actually saved. (This bug has been fixed in 3.3.0 and later versions).
Issues
Starting with version 3.0.0, the pricing policy changed to paid. Versions prior to 3.0.0 have limited functionality.