[MacPorts] #65892: gtk3: windows displayed as all black, for x11 install

[MacPorts]

#65892: gtk3: windows displayed as all black, for x11 install
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  Reporter:  asic512     |      Owner:  mascguy
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:  monterey x11
      Port:  gtk3 gnome  |
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Comment (by tcwan):

 When chasing down the new lead (alpha transparency issue), I found the
 following discussion:
 [https://github.com/XQuartz/XQuartz/issues/31#issuecomment-1677448706
 Xquartz Issue 31]

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Ticket URL: <https://trac.macports.org/ticket/65892#comment:18>
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