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Verification/E2EE device updates broken between element android and web

Don't have a way to reproduce this reliably yet, but @robyn:computer.surgery is attempting to connect an element web client, with the only existing session being element android. They are seeing the following behavior:

  • every time they load element web, it shows the "verify session" poppup
  • their element web session shows up as verified in settings on both element web and element android
  • they are unable to decrypt any encrypted messages
  • some (but not all) sync responses show up as completely garbled binary data in the firefox windows network inspector
  • if they go through the verification process, the "verify session" poppup appears again immediately
  • after doing verification, every sync request returns immediately with the following, until they reload, causing their browser to spam requests as fast as possible.
{
	"next_batch": "52166442",
	"device_lists": {
		"changed": [
			"@robyn:computer.surgery"
		]
	},
	"device_one_time_keys_count": {
		"signed_curve25519": 50
	},
	"device_unused_fallback_key_types": null
}