Settings for sgortcuts are buggy

[EimerWasser]

I think this problem is absolutly crazy and unbelievable. For a long time I have the shortcuts Super+Left/Right for changing a desktop. For changing a desktop within the current window Super+Shift+Left/Right.
The shortcuts for changing the desktops run both well, the shortcut for changing one desktop to de right within the current window also, but not to the left. Why? My keys are ok on both keyboards, in addition it runs finally when changing only the desktop without the current window. I set changed the shortcut than Alt+Shift+Left and Super+Alt+Left and Super+Shift+up. Every combination runs perfectly. I set this shortcut(Super+Shift+Left) for starting a browser and it ran. Everything runs finally but only a combination of this rainbows shortcut with changing the desktop to the left within the current windows doesn't run.
Sorry, I feel like being in a nuthouse.
I changed Right/Left with Up/Down and Down has exactly the same problem like Left.

[Pjotr]

Which Mint version?

[Cosmo.]

What happens, if you use (if needed set) the default shortcuts?
ctrl-alt-left/right for switching desktop
ctrl-shift-alt-left/right for moving the current windows to the other desktop

Super-left/right/up/down are by default used for tiling. Which shortcuts do you have assigned to those functions?

[EimerWasser]

I'm using Linux Mint 17.2 64-bit Cinnamon.