Close folder tab on Middle Mouse Up event

I'd like to see an improvement made to the folder tabs so that they close only upon releasing the middle mouse button, not on mouse-down (perhaps via an advanced option?). This may in fact be a bug because what I ask for is how the folder tab close buttons already behave when left-clicking them: only upon mouse-up is the close command triggered.

The middle mouse button only triggering close on mouse-up would also bring the behaviour into alignment with, what I believe is, the majority of other tab-based software.

Thanks!

- Directory Opus v12.23.3 Beta x64 Build 7752
- Windows 10 v20H2 OS Build 19042.870