I've just started to use this and it appears to be working as advertised. However it needs some documentation. The little video doesn't explain how to configure the preferences or even what they are intended to do????

Given the name, "Load Background Tabs on Select" -- I expect the default behaviour to 'hold' tab loading until it is selected. The Prefernces box suggest that I can add RegEx. Logically, I thought the regex would be patterns to match to "Allow Background Load", that is the opposite of the default "hold" behaviour. As far as I can see, that is not what "Preference" box does.

I went looking for some rudimentary documentation on the purpose of the "Preferences" RegEx list. none found. i recommend a few lines on the Add-on page to describe the use of the "Preferences" list. Then we would be a 5 star add-on :-)