Error: Expect an UserId instance, received P instead

[abyxcos]

[Error] Error: Expect an `UserId` instance, received `P` instead
(anonymous function) — vendor-6dbf17ae.js:60134:54597
wasm-stub
<?>.wasm-function[882]
<?>.wasm-function[4103]
<?>.wasm-function[610]
wasm-stub
rI — vendor-6dbf17ae.js:60134:14300
(anonymous function) — client-4506e41d.js:1:28123

	(anonymous function) (client-4506e41d.js:1:18597)

This also occurs in updateTrackedUsers, and pops up multiple times during sync (usually a few minutes apart).

[abyxcos]

[Error] Error: Expect an `UserId` instance, received `P` instead
(anonymous function) — vendor-6dbf17ae.js:60134:54597
wasm-stub
<?>.wasm-function[882]
<?>.wasm-function[4103]
<?>.wasm-function[898]
wasm-stub
getMissingSessions — vendor-6dbf17ae.js:60134:29567
(anonymous function) — client-4506e41d.js:1:20222
shareKeys — client-4506e41d.js:1:20517
(anonymous function) — client-4506e41d.js:1:19734

	(anonymous function) (client-4506e41d.js:1:18597)

[Error] Error: Expect an `UserId` instance, received `P` instead
(anonymous function) — vendor-6dbf17ae.js:60134:54597
wasm-stub
<?>.wasm-function[882]
<?>.wasm-function[4103]
<?>.wasm-function[897]
wasm-stub
updateTrackedUsers — vendor-6dbf17ae.js:60134:26729
(anonymous function) — client-4506e41d.js:1:32712

	(anonymous function) (client-4506e41d.js:1:18597)

[MTRNord]

This is related to https://github.com/matrix-org/matrix-rust-sdk/blob/main/bindings/matrix-sdk-crypto-js/src/machine.rs#L200 being faulty.

Wasmer has a fix at wasmerio/wasmer#3400 however https://github.com/wasmerio/wasm-bindgen-downcast is currently not public apparently making it questionable if it can be used in rust-sdk to fix this :/

[MTRNord]

bb599de is a workaround for this. However an upstream fix would be nice.