Hello, nice script, however sometimes I have to reload the page to make the buttons appear on the page. For example, whenever I navigate to an installed app (properly the buttons don't appear), then I click on another similar app on the right sidebar, I'm on the other page but still the buttons won't appear untill I reload the page.
No big deal but, is there a way to improve this behaviour somehow?
Anyway, thank you for the script so much! I'm on firefox 59, tested with Greasemonkey, Tampermonkey, Violentmonkey and the results were the same.