[bug]popup mode is just not reliable

[wadawada]

Too many times it fails to close all the tabs that I selected
Instead, it closes a few tabs and the popup window closes, so I'll have to select tabs again
Ended up I need to open the extension in new tab to make sure it works

Also, something is wrong when I muliselect with use the "ctrl" key
It may eventually break the selections so I can't select too many tabs or I will have to select them again
kind of an annoying bug

[mastef]

Tracking part 1 in #179

Can you please explain the 2nd bug? I don't fully understand what the problem is with the ctrl key. Which browser does this happen in? ( feel free to re-open the issue with new feedback )