Only the left and right edges are yellow on top, with full bars on the front and back sides.
Algorithms
R' F R U R U' R2 F' R2 U' R' U R U R'
15 moves
YOURS
(U) R U2 R2 U' R U' R' U2 F R F'
11 moves
Relations
Your algorithm backwards
R U' R' U' R U R2 F R2 U R' U' R' F' R
solves OLL 54
That's why your scrambles are never the inverse of the algorithm: you'd be practising OLL 54 without knowing it. CubeDojo builds a random state with this case and checks it comes out.