Single Perimeter Bridges printed in mid air before poles get printed

[XoBoR]

Description of the bug

I noticed that the Slicer get's very confused when dealing with single perimeter bridges, i made a simple model that shows the problem, here's a gif of how the layer containing the bridge is currently printed:

Here you see that first one pole is printed, then the bridge is printed in the wrong direction (it starts in mid air) and then the final pole is printed. This leads to a failed print and this print would work perfectly if printed in the right order.

This is with the Arachne Perimeter Generator. With Classic Perimeter Generator the bridge is printed before everything else, which is even worse.

Project file & How to reproduce

Just slice the Example 3mf file
Example.zip

Checklist of files included above

• Project file
• Screenshot

Version of PrusaSlicer

2.6.0

Operating system

Windows 10

Printer model

varying