This project shows a problem with color sensing. This issue is likely related to an error in importing a Scratch 2 SVG costume. Click the GF. Under Scratch 2 the figure pushed the block. Under Scratch 3 the figure will pass through the block. Scratch 3 link: https://beta.scratch.mit.edu/#249387889
This is from GAMER_IANXD project here: https://scratch.mit.edu/projects/247847974/ which he reported as an error in this post: https://scratch.mit.edu/discuss/topic/316849/?page=1#post-3266741 The Scratch 3 import of the figure costume is wrong. You will need to zoom about 8 times to see the missing torso at the bottom right of the editing area. The program an be partially made to work by dragging the torso back under the head. I've gotten various results, perhaps because my mouse-editing skills are not precise.