## Problem with upwardDirection x = -1.0 and people walking from right to left or y = -1.0 and downwards movement

If stairs are added with property upwardDirection: x = -1.0 and pedestrians are walking from right to left or y = -1.0 and peds moving downwards in the scenario, they will get stuck in the stairs. For pedestrians walking from left to right or upwards, no problem could be observed for both x or y \in {-1,0, 1.0} and x or y \in {-1.0, -1.0 }

#### Workaround: Use x=1.0. At the moment, there is no difference in the model for upwards / downwards stairs.

### Left to right (x = -1.0)

### Left to right (x = +1.0)

### Buggy: Right to left (x = -1.0)

### Right to left (x = +1.0)

### Downwards (y = +1.0)

### Buggy: Downwards (y = -1.0)

### Upwards (y = -1.0)

### Upwards (y = +1.0)

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