ControlLabel.setLabel crashes Kodi

For a project I want to start I was trying to adjust the default Estuary skin. As such, I was investigating how to dynamically change the contents of a label.
However, Kodi crashes on the setLabel function call. Am I missing something here?
Log doesn't show anything why it crashed, even when on debug log.

I have verified:
- The script is running (verified through embedding a log earlier)
- The ControlLabel object is obtained through the getControl function (verified through splitting the function calls)

Running on Debian (Bullseye) on a rasp 4b. 

I have added the following:
Home.xml:

Home.xml:


<control type="label" id="799">

<label>Test</label>

<top>200r</top>

<height>200</height>

<color>ffffffff</color>

</control>



<control type="button" id="800">

<onclick>RunScript(/../run.py)</onclick>

<onup>700</onup>

<width>462</width>

<left>0</left>

<height>100</height>

<top>100r</top>

<font>font12</font>

<label>Run</label>

<color>ffffffff</color>

</control>

Contents of run.py is:

run.py:


import xbmcgui

xbmcgui.Window(10000).getControl(799).setLabel('12345')