In Japanese (ja_JP), the shortcut Shift + Q is assigned to both Create Luminance Range and Constrain Aspect Ratio. Typing Shift + Q always invokes Create Luminance Range even when the Crop Tool is open.
The relevant TranslatedStrings lines:
"$$$/AgDevelop/Menu/View/LuminanceRange/Key=Shift+q"
"$$$/AgDevelop/Menu/Photo/ConstrainAspectRatio/Key=Shift+q"
All languages assign Shift + Q to Create Luminance Range.