Hello, if there is some peoples who know something in coding, i'm made some research about the torch bug (lit 50% still here after deconstructing the torch).

Here what i found :
Go where the mod is installed on your PC -> 1.3\Defs\ThingDefs_Buildings -> Buildings_Furniture.xml

Go to this line of code (164 for notepad++ users) :

<li Class="VanillaFurnitureExpanded.CompProperties_GlowerExtended">
<spawnGlowerInFacedCell>true</spawnGlowerInFacedCell>
<colorOptions>
<li>
<glowRadius>10</glowRadius>
<glowColor>(252,187,113,0)</glowColor>
</li>
</colorOptions>

I replace the line of code with this one :

<li Class="CompProperties_Glower">
<glowRadius>10</glowRadius>
<glowColor>(252,187,113,0)</glowColor>
</li>

It fixed the issue BUT now the light go through the walls.

Unfortunately that's all i can do, i'm not skilled enough to go farther so if anyone find this and want to help, i would gladly accept it.