I’m translating that as:
“Yes, exactly. I also solved it with two timers but even there collision remains. although I also set “Only if visible”.”
I just reproduced this bug as well.
Searching for the terms “Color Changing Tile” and “Only When Visible” lead me to these two threads that are seeing the same issue.
According to a Staff member in one of the posts, a bug has been filed.
I do find that calling the Hide function on a creative_prop directly (as opposed to a color changing tile device) will disable collision.