*** If you're not sure this is actually a bug, instead post about it at https://discuss.kde.org If you're reporting a crash, attach a backtrace with debug symbols; see https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports *** SUMMARY On windows 10, with Thunderbird set as default e-mail software and after adding the "Share" button to the Okular toolbar If one tries to share the opened PDF document by E-mail - by pressing the share button - it won't open Thunderbird with the document attached on a new message, as expected STEPS TO REPRODUCE 1. Install Thunderbird and set it as default E-mail Client on Windows (and configure it as you see fit) 2. Go to Windows Store and install Okular 3. Add the Share button to the Okular toolbar 4. Open a PDF Document with Okular and press the Share button OBSERVED RESULT Nothing happens! EXPECTED RESULT it should automatically open and create a new e-mail message on Thunderbird, with the document attached, and ready to be filled with the sender's data SOFTWARE/OS VERSIONS Windows: 10 (latest update)