Some PiP special casing was removed in bug 2040926 due to third party causing crashes, this seems to match the timing (uplifted from 153 to 152 back then). Not directly referencing as a regressor, more of a context for considering uplift potential of this fix.
Bug 2048501 Comment 10 Edit History
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Some PiP special casing was removed in bug 2040926 due to third party causing crashes, this seems to match the timing (uplifted from 153 to 152 back then). Not directly referencing as a regressor, more of a context for considering uplift potential of this fix — and also a heads up for QA regarding the ESET crash pattern earlier for awareness.