multimaterial wrong slicing on edge

[TylonHH]

Description of the bug

Hi,
I have here an architecture modell wich I wanna print in multicolour. So after spending hours colouring all the facetten I have one edge wich is wrong sliced. I tried to rotate the modell, but the bug still persist.
Then I thought I could cut the edge to get different triangle, no luck.

So for me it seems to be a bug.
What you think?

PS: I also posted in the community forum.

Project file & How to reproduce

Rmove extension TXT. Open project and slice. Dont worry about the bed size, I hoped to see artefacts at the corner.
Model1_Final_WIP.3mf.TXT

Checklist of files included above

• Project file
• Screenshot

Version of PrusaSlicer

PrusaSlicer-2.4.2+win64-202204251110

Operating system

Win10

Printer model

Prusa

[kubispe1]

This issue persist in 2.5.0 alpha 3 and also 2.4.2 tested on Win 10.

[lukasmatena]

Fixed in 2.9.0-alpha1. Closing.