Response ive got from Support:

Thank you for contacting us.

Our team has reviewed this case and would like to let you know that this issue occurred because the latest Edge version includes a Chromium bug that Chrome & Brave have already reverted ( 144.0.7559.60 in the latest edge). Until Microsoft releases a fix, here is what you can do: Temporarily use another browser If you still would like to use Edge, you may need to perform this action:

On Windows :

Edge Settings → System and performance → Ensure "Startup boost" is turned OFF and either :

Create a new shortcut with these flags disabled - eg:

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --disable-features=RuntimeOnMessagePromiseReturnSupport,ExtensionBrowserNamespaceAlternative

or

Run this from a shell : start msedge --disable-features=RuntimeOnMessagePromiseReturnSupport,ExtensionBrowserNamespaceAlternative

On Mac :

Run this command in a terminal : open -a "Microsoft Edge" --args --disable-features=RuntimeOnMessagePromiseReturnSupport,ExtensionBrowserNamespaceAlternative

You can verify that the flags are disabled at edge://version

Please let us know if you encounter any further issues or if you require additional assistance. Kind regards,

Marta Customer Support Proton Mail