I have a fairly straightforward fix for this, but not that it does not fix the related case where there is a meta-viewport tag with an explicit width. In that case, `innerWidth` may be evaluated before the `DOMMetaAdded` event for the meta-viewport tag arrives, in which case the info from the tag isn't available yet.
Bug 1661544 Comment 7 Edit History
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I have a fairly straightforward fix for this, but note that it does not fix the related case where there is a meta-viewport tag with an explicit width. In that case, `innerWidth` may be evaluated before the `DOMMetaAdded` event for the meta-viewport tag arrives, in which case the info from the tag isn't available yet.