CHROMETABINDEX longer working with Brave

This returns 0 no matter which tab is selected in Brave. Up until this week it was working fine. I don't think anything has changed. Anyone else?

I've checked Keyboard Maestro has automation permissions in security preferences and run the following commands:

defaults write com.stairways.keyboardmaestro.engine BrowserGoogleChromeName "Brave Browser"

defaults write com.stairways.keyboardmaestro.engine AppleScriptGoogleChromeName "Brave Browser"