I believe we already sometimes do this for external protocols [here](https://searchfox.org/mozilla-central/source/docshell/base/nsDocShell.cpp#10116-10227), but only in some situations. I'll add 2 dependent bugs for each situation.
Bug 1877430 Comment 2 Edit History
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I believe we already sometimes do this for external protocols [here](https://searchfox.org/mozilla-central/source/docshell/base/nsDocShell.cpp#10116-10227), but only in some situations. I'll add 2 blocking bugs for each situation.