Created attachment 8518263 [details] Testcase for the "proto for a custom element" bit It doesn't consider cases when protoObject is a cross-compartment wrapper for a Web IDL interface. It also doesn't consider cases when it's already registered as a proto for a custom element.
https://bugzilla.mozilla.org/show_bug.cgi?id=1472046 Move all DOM bugs that haven’t been updated in more than 3 years and has no one currently assigned to P5. If you have questions, please contact :mdaly.
Priority: -- → P5
This is about the old v0. (but I'll test similar stuff on v1 APIs)
Status: NEW → RESOLVED
Last Resolved: 5 months ago
Resolution: --- → INVALID
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