Split tabs + Shortcut keys to navigate between split tabs are not working

**Describe the bug**
I see the following key combinations under Keyboard shortcuts -> Split management
Focus terminal above ->>   Shift + Super + Up
Focus terminal below ->>   Shift + Super + Down
Focus terminal on the left ->>   Shift + Super + Left
Focus terminal on the right ->>   Shift + Super + Right

**Expected behavior**
When I press the combination "Shift + Super + Up" the focus should be in the upper split terminal from the current split terminal. Likewise, for the remaining, based on the Down, Left and Right arrow key combinations, the focus should move to the terminal below, or to the left or right from the current split terminal respectively.

**Actual behavior**
Focus terminal above - Shift + Super + Up - **Not working**
Focus terminal below - Shift + Super + Down - **Not working**
Focus terminal on the left - Shift + Super + Left - **Moving the Guake terminal window to the left monitor** (_I think the Linux OS shortcuts for moving windows is working here, so not as expected._)
Focus terminal on the right - Shift + Super + Right - **Moving the Guake terminal window to the left monitor**

**To Reproduce**
1. Open the Guake Terminal
2. Create couple of split terminals
3. Try to navigate (or change focus) between the split terminals using the key combinations mentioned above.
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Please run `$ guake --support`, and paste the results here. Don't put backticks (`` ` ``) around it! The output already contains Markdown formatting. And make sure you run the command **OUTSIDE** the Guake.
ureshk@ureshk-Lenovo-Z70-80:~/learningStuff$ guake --support
$ guake --support

Guake Version: 3.7.0

Vte Version: 0.52.2

Vte Runtime Version: 0.52.2

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GTK+ Version: 3.22.30

GDK Backend: GdkX11.X11Display

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Desktop Session: ubuntu

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Display: :0

RGBA visual: True

Composited: True

* Monitor: 0 - DP-1-1
* Geometry: 1920 x 1080 at 1920, 0
* Size: 509 x 286 mm²
* Primary: True
* Refresh rate: 60.00 Hz
* Subpixel layout: unknown
* Monitor: 1 - eDP-1-1
* Geometry: 1920 x 1080 at 0, 0
* Size: 382 x 215 mm²
* Primary: False
* Refresh rate: 60.01 Hz
* Subpixel layout: unknown