BoldingLabel placement issue
GtkLabel uses a default xalign
of 0.5 (so centered), with the added width of the bolding label the regular label will shift slightly more to the center. This is particularly visible in a left-aligned list of items (while not bold).
Solution is to set xalign
to 0 in this case or in general to make xalign
really follow halign
. Not sure this is really wanted in the widget or that it should just have a little blurb about it in the documentation on this particular behaviour.