I couldn't find a way to sync image from Shader Node editor to UV Editor.
Updated to work not only with Luxcore but also with Evee, Cycles and Workbench:
Sync image from Shader Image Node to UV Editor addon
Sync image from Shader Image Node to UV Editor addon
Last edited by pepe on Sat Feb 19, 2022 5:58 pm, edited 2 times in total.