Drawing offset caused by mixing GTK_ALIGN_BASELINE and GTK_ALIGN_CENTER

Platform
#1

For controls with GTK_ALIGN_CENTER, allocate allocates fine. But the painting is offset.

Does this have something to do with how I use it?
node tree:

  • box
    • label(valign: baseline)
    • label(valign: baseline)
    • box(valign: center)

图片