There is a good chance that the issue, you have encountered, is already reported. Please check the [list of reported issues](https://github.com/prusa3d/PrusaSlicer/issues) before creating a new issue report. If you find an existing issue report, feel free to add further information to that report.
If possible, please include the following information when [reporting an issue](https://github.com/prusa3d/PrusaSlicer/issues/new):
* PrusaSlicer version (See the about dialog for the version number. If running from git, please include the git commit ID from `git rev-parse HEAD` also.)
Simon Tatham has written an excellent on article on [How to Report Bugs Effectively](http://www.chiark.greenend.org.uk/~sgtatham/bugs.html) which is well worth reading, although it is not specific to PrusaSlicer.