i have reference panel outside the main canvas :
when using a reverse hotkey or when using the Navigator panel 'flip canvas' button, the reference panel 'reverse' option is modified.
example : if 'yes' is checked, the option becomes 'no' when a reverse hotkey or a flip canvas button is used.
In the same way, if 'no' is checked, it becomes a 'yes'.
But if 'as main canvas' is checked, it becomes a 'yes', then 'yes' and 'no' take turns.
Other example, if (in the main canvas) the cursor is on the left side, then the reference panel is flipped (using a reverse hotkey), but if the cursor is on the right side then the main canvas is flipped.
It's the same using 'flip canvas button' in Navigator panel, if the Navigator panel is on the right the main canvas is flipped, but if it's on the left, then the reference canvas is flipped.
Issues are slightly different when the reference panel is inside the main canvas.
Thanks and bon courage.