[WEB COMPAT] Yomitan extension can't install dictionaries

WEB COMPAT

Confirmation

I confirm.

Domains

Not a domain but the extension (addon) Yomitan.

Version

2025.10.12.1

Browser

IronFox 144.0.1

Platform

GrapheneOS

Reason

When I try to install a dictionary (like one of the recommended dictionaries, kty-en-en) from the settings menu, a download progress bar appears and when it completes and you move to the "Configure installed and enabled dictionaries" menu, you see an error CompileError: call to WebAssembly.instantiateStreaming() blocked by CSP and the dictionary you tried to install doesn't appear in the list (which means it failed).

This issue mentions the same error and it seems to be caused by WebAssembly being blocked: https://github.com/yomidevs/yomitan/issues/2122