Sprite with Pathfinding does not move in the maze at Cell Size 32

I have this kind of maze, and a blue Sprite1 with the Pathfinding behavior. The maze is perfectly aligned to a 32x32 grid as shown in the screenshot. The Cell Size in the Pathfinding behavior is also set to 32, and Cell Border is set to -1. However, when activated, the sprite stays in the same position and gets stuck while trying to find a path to the yellow sprite.

The strange thing is, the problem is solved if I set the Cell Size to 15 — then the blue sprite smoothly navigates through the maze and reaches the target. But the downside is that its collision box starts overlapping the maze walls quite a lot.

Can someone point out what I might be doing wrong? Is there something I’m missing?

dropmefiles.net/BeNMUAT link project

The grid is not perfectly aligned. You need to shift everything 16px down and to the right. Set grid size to 32 and border to -1.

There is an addon that's better suited for this task:

construct.net/en/forum/construct-2/addons-29/behavior-easystar-js-96215