### Description of the bug see this forum entry for all info. https://forum.prusa3d.com/forum/prusaslicer/slicer-2-9-bug/#post-730579 ### Project file & How to reproduce see this forum entry for all info. https://forum.prusa3d.com/forum/prusaslicer/slicer-2-9-bug/#post-730579 ### Checklist of files included above - [X] Project file - [ ] Screenshot ### Version of PrusaSlicer 2.9 ### Operating system windows 7 ### Printer model xl