Attempting to edit the legend results in a crash in Linux.
Steps to Reproduce:
1. In Writer, Insert -> Chart
2. Right click on Legend -> "Format Legend"
This affects gtk3, gtk, and gen backend. Reproduced on both KDE in KDE Neon and GNOME in Fedora 28. No issue on Windows. Bisected to:
Author: Caolán McNamara
honor getNumDecimalSep for keypad input in native gtk3 dialogs
*** This bug has been marked as a duplicate of bug 121394 ***