Created attachment 657030 [details]
qtconfig showing that Roboto Black is selected.

Hi!

I'm using openSUSE Tumbleweed with MATE 1.12 desktop and Qt theme is set to
GTK+.

After last snapshot, I switched the default font to Google's Roboto using
`mate-appearance-properties`. I also changed it in KDE `systemsettings5`.
However, I noticed that all Qt4 apps was showing a darker font. Then, when I
tried to configure using `qtconfig`, it shows that the selected font was Roboto
Black instead of Roboto Regular. I tried many things, but as far as GTK+ theme
is selected, I could not change the font in `qtconfig` to Roboto Regular, which
seems to be causing the problem.

I'm uploading three figures:

1) The qtconfig showing that Roboto Black font is selected;
2) A screenshot of kwrite, showing the correct font (Roboto Regular);
3) A screenshot of digikam, showing the wrong font (Roboto Black).

Here is additional information about my system:

$cat /etc/os-release 
NAME=openSUSE
VERSION="Tumbleweed"
VERSION_ID="20151118"
PRETTY_NAME="openSUSE Tumbleweed (20151118) (x86_64)"
ID=opensuse
ANSI_COLOR="0;32"
CPE_NAME="cpe:/o:opensuse:opensuse:20151118"
BUG_REPORT_URL="https://bugs.opensuse.org"
HOME_URL="https://opensuse.org/"
ID_LIKE="suse"