I see the issue. The puzzle is mostly mirrored and I assumed that players would intuit that with some of the shapes. BUT, b/c the puzzle is not completely mirrored this was false and can see the dual end state that is possible I have added one Passage to clarify the solution (bottom row, far left line is now a Passage).
Thank you again for finding these errors! Being that all the puzzles I make are handmade there I can miss things and having people take the time out to comment or contact me about it is greatly appreciated.