Keyboard shortcuts not working with fine tune audio timing

Reading the document - using aeneas for audio-text sync, page 13 and 14 speaks of keyboard shortcuts. I thought I would give it a try, but SAB 8.1 does not seem to pay notice to what I do with the keyboard. Is this still a current feature of SAB?

Thanks
John

That is working for me in Chrome, Opera and Edge. It did not work in Firefox. You need to have the browser as the focused app.

Thanks - changed my default browser from Firefox to Chrome and now it works well.