BETA version -- 5.0.1002.182

[bufce2010]

Also, in (chrome://settings/cbTabOptions), there is another entry: "When middle clicking on tab" option , and you can can set it to close tab with the drop down selector next to that entry. 


So basically, in (chrome://settings/cbTabOptions), if you have both options set as shown in screencapture below, you can have both functionalities active at same time, which I believe is what you wanted: to be able to close tab on middle click of that specific tab, and also to unpin/pin active tab when middle click on tab bar.

there was only one option showing until I've updated to version 5.0.1002.295