gschem (gEDA): Invalid borders specified for theme pixmap

When open gschem (gEDA) we get the error below. Any ideas?

Invalid borders specified for theme pixmap:
        /usr/share/themes/Maia/gtk-2.0/../assets/line-h.png,
borders don't fit within the imageinvalid source position for vertical gradientinvalid source position for vertical gradientinvalid source position for vertical gradientinvalid source position for vertical gradientinvalid source position for vertical gradientinvalid source

[...]

gradientinvalid source position for vertical gradientinvalid source position for vertical gradientinvalid source position for vertical gradientinvalid source position for vertical gradientInvalid borders specified for theme pixmap:
        /usr/share/themes/Maia/gtk-2.0/../assets/line-h.png,
borders don't fit within the image

NOTE: I use Manjaro (KDE)!