column: HdyColumn is off-center when used as a HeaderBar title child & hexpand=true

What problem did you encounter?

In what part of libhandy did you experience the problem? Note that multiple boxes may be checked.

• build system
• documentation
• example application
• HdyArrows
• HdyColumn
• HdyDialer
• HdyLeaflet
• somewhere else (please elaborate)

What is the actual behaviour?

HdyColumn is aligned incorrectly to the HeaderBar's children when used as the title within a HeaderBar.

What is the expected behaviour?

HdyColumn and its children are centered correctly.

How to reproduce?

1. Create a HeaderBar
2. Add children to a HdyColumn
3. Set the HdyColumn as a custom title

Which version did you encounter the bug in?

• I compiled it myself. If you compiled libhandy from source please provide the git revision via e.g. by running git log -1 --pretty=oneline and pasting the output below.

• I used the precompiled Debian package (e.g. by running a prebuilt image). Please determine which package you have installed and paste the package status (dpkg -s)

Revision 947a2169

What hardware are you running libhandy on?

• amd64 qemu image
• Librem5 devkit
• other (please elaborate)

Arch Linux laptop via org.gnome.Sdk/x86_64/master