Why "Kill Tab" kills all tabs with same domain?[Solved]

[rey]

Settings > Tab Options > When middle-clicking on tab = Kill tab
Everywhere it's written in single quantity and user would expect only the clicked-one tab would be affected, so why when using this ability it kills all the tabs with same domain?

[Admini]

Because all tabs with the same domain share the same process.
"Kill tab" is actually "Kill process".
If you don't want this, you can use "Unload tab".

[rey]

I was probably blind, didn't notice it's right above and took "kill" as an only option. Thank you!