These factors make make me doubt the use of webviews and cross-platform solutions for apps which have transient user actions and tight system integrations such as responding to share menus where they should pop into the foreground quickly and then get out of the way again. When they are out of the way, they shouldn't have displaced a bunch of other apps because of a large memory footprint and thus slow down the switch to them as they are restarted from cold.
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