As mentioned on MCPE-103142 already, the app crashes immediately when trying to log in to my Microsoft/Mojang account.
The devices has been resetted to factory default already and the only installed app is Minecraft, but it still crashes.
Device is a Huawei MediaPad M5 lite 10 (Model BAH2-W19, Build number BAH2-W19 8.0.0.318)
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Thank you for your report!
We're tracking this issue in MCPE-100100, so this ticket is being resolved and linked as a duplicate.
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Switch does this frequently as well.