As-described, it sounds like the bug is invalid (i.e. our behavior is correct); though perhaps we should morph to cover Jeff's request in comment 4 (to be able to report an error while still accepting the font).
Bug 1769262 Comment 7 Edit History
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As-described, it sounds like the bug is invalid (i.e. our behavior is correct; we reject the font as invalid in Nightly, though for now we do accept it on release). Perhaps we should morph to cover Jeff's request in comment 4 (to be able to report an error while still accepting the font).