Debug builds validate the values returned to the extension against the schema. For instance, the tabs.create API returns Toolkit tab objects to the extension and the properties of this object are validated in debug builds. However Thunderbird's schema doesn't contain all of the properties that Toolkit sets on tab objects so the validation fails.
Created attachment 9029735 [details] [diff] [review] 1511838-webext-tab-properties-1.diff Same patch, different bug.
Assignee: nobody → geoff
Status: NEW → ASSIGNED
Attachment #9029735 - Flags: review?(mkmelin+mozilla)
Attachment #9029735 - Flags: review?(mkmelin+mozilla) → review+
Pushed by email@example.com: https://hg.mozilla.org/comm-central/rev/c474610d2c81 Stop returning some useless properties in a WebExtensions tab object; r=mkmelin
Status: ASSIGNED → RESOLVED
Last Resolved: 4 days ago
Resolution: --- → FIXED
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