Installation fails on Snapdragon ARM64 devices

I am unable to install Minecraft for Windows (Bedrock) on my ARM64 Snapdragons. (SQ1 + SD850) It seems to work fine on my Intel devices.
Symptoms + Steps to repro:

Get a Snapdragon on Sun Valley 2 preview (any version).

FROM STORE:
1. Click "Install" button, wait 10-15 seconds
2. Message: "Error. Something happened at our end".

FROM minecraft.net/download
1. Download and run installer, wait about 1 minute
2. unspecified Error, installation fails

This happens on both my Snapdragons, so I don't think it is an issue with the devices.

According to this: Minecraft Bedrock Installation Issues FAQ – Home, ARM64 / Snapdragon devices are supported, so something must be broken.

Let me know what I can do to help troubleshoot. Thanks!

Canceled my real subscriptions in the meantime, as I can't decently play anymore.