Enabled text auto shrink break text alignment configuration

[horada]

When I enable Auto shrink (Allow merge to automatically shrink text), the text is forced to be aligned to the left and it is not possible to center it or align it to the right.

You can see example of my configuration of the text area on this screenshot (see the Alignment configuration and Allow merge to automatically shrink text configuration):

And example output for various input data: If the input text is long enough to fill the text area, it works as expected (text is correctly resized to fit to the text area) - first and fourth label. But if the text is too short to fill whole text area, it is aligned to the left - second and third label.

[toggenation]

I'm seeing the same issue using glabels-3-batch when using the following versions compiled on Ubuntu 18.04.3 LTS

Text I set to auto-scale becomes left aligned

RUN apt-get -y build-dep glabels

RUN mkdir /build && cd /build &&
wget https://downloads.sourceforge.net/project/zint/zint/2.6.3/zint-2.6.3_final.tar.gz &&
tar -xvf zint-2.6.3_final.tar.gz &&
cd zint-2.6.3.src/ &&
mkdir build && cd build &&
cmake .. && make && make install

RUN cd /build &&
wget https://ftp.gnu.org/gnu/barcode/barcode-0.98.tar.gz &&
tar xzf barcode-0.98.tar.gz &&
cd barcode-0.98/ &&
./configure && make &&
make install

RUN cd /build &&
wget http://ftp.gnome.org/pub/GNOME/sources/glabels/3.4/glabels-3.4.1.tar.xz &&
tar xvf glabels-3.4.1.tar.xz &&
cd glabels-3.4.1/ &&
./configure &&
make && make install && ldconfig