I needed this extension to easily create new tab as a child of current in TreeStyleTabs with saving current tab MultiTabContainer to replace duplicated URL by new search request. And this extension worked good, except that Alt+Shift+D is a counter intuitive shortcut for me if even a convenient one (more convenient than Ctrl+Alt+D). But next I found Vimium and it could "create new tab as a child of current in TreeStyleTabs with saving current tab MultiTabContainer" just by pressing t and it was new tab with opened URL search, not just duplicated (though shortcut for duplicated was just yt and TreeStyleTabs and MultiTabContainer were ok too). So I delete this extension for both easier and more functional one (and better matching to my actual goal).

Good, but the duplicated tab doesn't include the tab history. Can we make the new duplicated tab exactly the same (with all history etc) as the original tab? This is required to enable us to navigate back in the duplicated tab if we need to.

Nice, but I would like to have option, to assign custom hotkeys and not just only alt + shift + D. Due to this, I have incompatibility issues with other browsers.