Forum communautaire Firefox

I hope this message finds you well! I use two versions of Firefox: the stable one and the developer one.

The developer version is set to start with the Windows start and is set to be minimized on the Windows try but since some years Firefox, as other browser do, never load the page or the tab content if the tab or the window is not active, been seen by the user.

I'm asking if there is some hidden settings in the about:config that allow me to disable this and let Firefox load tabs or page always, not only when the tab or windows is seen by me.

Thank you.

I set up a custom search extension and am trying to use 'z' as the keyword.

It doesn't work. If I use anything else, it works fine, I just can't use 'z'.

Since I use 'z' in Chrome, I'd like to keep it consistent.

I don't see any other search engines using that keyword.

Is there something I'm missing here? Why can't I seem to use 'z' as a search engine keyword?

Thanks for your help!