curve with 3 degree in marking menu cannot work correctly in 2016

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Is there any conflict between the same tool like curve with 3 degree in palette and self-made shelf if i change hotkeys in preference?

Here is my problem which made me confused,i just put curve (3 degree)and curve(5 degree) into my marking menu ,but i found it only works as 1 degree,besides,the curve(3 degree and 5 degree) in palette also failed with the same consequence,but unexpectedly,it works well in my shelf !!!

So,what's the matter ?

Also,the hotkeys in preference is "interesting",it contains the setting about palette  ,shelves and default panel shelves at the same time ,how to coordinate the same tool in these different positions ？ i mean ,any manual change will make it unstable ?