Reproduced with lp:inkscape r15546 (MSYS2 build by Eduard Braun), r15563 (local devlibs64 build) on Windows 10.
Not reproduced with Inkscape 0.92.1 r15371 (official builds from inkscape.org for Windows, local builds on OS X 10.7.5, PPA on Ubuntu 14.04.5).
Not reproduced on Ubuntu 14.04.5 LTS (GTK+ 3.10.8, cairo 1.13.0, GNOME desktop with Adwaita theme) with lp:inkscape/0.92.x r15400 configured with GTK3, and with lp:inkscape r15551 (local build).
Reproduced with lp:inkscape r15546 (MSYS2 build by Eduard Braun), r15563 (local devlibs64 build) on Windows 10.
Not reproduced with Inkscape 0.92.1 r15371 (official builds from inkscape.org for Windows, local builds on OS X 10.7.5, PPA on Ubuntu 14.04.5).
Not reproduced on Ubuntu 14.04.5 LTS (GTK+ 3.10.8, cairo 1.13.0, GNOME desktop with Adwaita theme) with lp:inkscape/0.92.x r15400 configured with GTK3, and with lp:inkscape r15551 (local build).