Position Node dropdown expresses it starts off in "World Space" but behaves as "Absolute World Space". If you then close the project and reopen it the drop-down will change automatically to "Absolute World Space" and show it's true setting. Pressing the play button triggers same effect. The drop-down will change. Manually trying to change the setting and saving the shader has no effect up until the point where you've either pressed play or closed and reopened the project.

download link:
https://drive.google.com/file/d/1Kxa9R90PmXg0u3A8_7o-1aLGagtPRTGX/view?usp=sharing