Could it be that this just works now in Fenix? I set `security.strict_security_checks.enabled` to true and don't see such an error in the remote debugging browser console. Furthermore I can switch to different `geckoview.xhtml` tabs and see a non-null, seemingly correct `this.browser.contentPrincipal`. I suppose this is due to GeckoView? Since Android Nightly switched to Fenix by [this](https://searchfox.org/mozilla-central/rev/a3266997560904b484fd89d6a6bcdeace4a13652/modules/libpref/init/all.js#2310) could maybe be fixed and ride the trains?
Bug 1504968 Comment 2 Edit History
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Could it be that this just works now in Fenix? I set `security.strict_security_checks.enabled` to true and don't see such an error in the remote debugging browser console. Furthermore I can switch to different `geckoview.xhtml` tabs and see a non-null, seemingly correct `this.browser.contentPrincipal`. I suppose this is due to GeckoView? Since Android Nightly switched to Fenix by now, [this](https://searchfox.org/mozilla-central/rev/a3266997560904b484fd89d6a6bcdeace4a13652/modules/libpref/init/all.js#2310) could maybe be fixed and ride the trains?