I can reproduce the behavior. We might not actually have implemented data: blocking on Android. Maybe we are not even using the code at https://searchfox.org/mozilla-central/source/netwerk/ipc/DocumentLoadListener.cpp#2565
Bug 1933383 Comment 4 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
I can reproduce the behavior. We might not actually have implemented data: blocking on Android. Maybe we are not even using the code at https://searchfox.org/mozilla-central/source/netwerk/ipc/DocumentLoadListener.cpp#2565 Might be the same cause as https://bugzilla.mozilla.org/show_bug.cgi?id=1933377