Try joining the discord and asking there, you would have a bigger chance to get any info related to the tk on linux, or maybe even making mods in the old fashion.
Does anyone here, who uses Linux, managed to run toolkit without the bug? What tool do you use for moding on Linux?
There is actually a full thread dedicated to using the Toolkit in the Larian Discord, and the OP of it is putting together a guide, so I would definitely recommend popping in to take a look!