Stopped working in Firefox, but working from Chrome

[mlesin]

About

Suddenly, possibly with some Firefox update, extension stopped working correctly, but from Chrome, everything works as expected. I see this behavior in Linux and OSX releases of Firefox 107.0.
Application now says on every urql action the following:

Unable to send message to Urql Devtools extension

While extension itself says

Make sure you're using the Urql Devtools exchange!

Reproduction

1. Clone this slightly modified "with-vue3" example project
2. Run yarn install
3. Run yarn start
4. Open firefox and navigate to http://localhost:8080 or other port assigned by vite
5. Open the urql devtools panel

Expected result

• Extension detects app and shows schema, query

Actual result

• Extension shows message "Make sure you're using the Urql Devtools exchange!"
• In console, application shows message "Unable to send message to Urql Devtools extension"

Additional info

environment	version
browser	Firefox 107.0
urql	3.0.4
@urql/devtools	2.0.3

[max-nicholson]

Getting the same on the latest firefox version (113)