#1: Cursor is on FileA (No other files Selected)
----| Ctrl+Click on FileB
Result ------> FileB is selected.
Expected --> FileA & FileB are selected.
Im not able to make this happen. I turned on Window Style mouse/key in Quick Look'n'Feel Setup. No other customization.
Maybe you have tweaked some other settings that makes it break ?
#2: Cursor is on FileA
----| Ctrl+Click on FileA
Result #1--> Inline-Rename activated.
Result #2--> File is selected/deselected (after you move the mouse)
Result #3--> Nothing Happens.
Expected --> FileA selection toggles (without moving the mouse)
That is because the rename action is configured to click and wait.
Maybe can be tweaked a bit to not fire command if ctrl is pressed. However. for some actions you might want that.
#3: Selection of Files via Left-Click Box-Drag
----| Behaviour appears to be consistent with #2.
Normal Select/Deselect with quirks if the cursor is on the file that you Ctrl+Click.
Same issue. Action fire on click and wait.
#4: Selection of Files via RButton Click, or RButton Drag
----| Behaviour here is the most inconsistent.
Ctrl|Shift + Click & LButton Box-Drag seems to be a different type of selection than RButton.
It appears to take at least two Ctrl+Click's to deselect a file that was selected via RButton.
Im not able to recreate that. Might be because of some conflicting settings.