Documentation : How to submit bug reports
Did you find a bug in Sumatra? Please create a bug report in our issue tracker .
Does it involve a specific PDF (or CHM or XPS or …) file? It’s important to provide us with a file that shows the problem by e.g. by attaching it to the issue or uploading it to ge.tt and sharing a link.
If you’re using the latest release version, please try the portable prerelease . It’s possible the bug has already been fixed.