[MacPorts] #69010: gscan2pdf: on startup all dialogs/windows are blank/white

[MacPorts]

#69010: gscan2pdf: on startup all dialogs/windows are blank/white
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 Reporter:  tenzap  |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.8.1
 Keywords:          |       Port:  gnucash
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 When I launch gscan2pdf, it starts x11 as expected but all windows are
 blank.
 Any idea what's going on?

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Ticket URL: <https://trac.macports.org/ticket/69010>
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