[MacPorts] #58922: xorg-server @1.20.5: screen capture of java programs from ubuntu server are missing visual components

[MacPorts]

#58922: xorg-server @1.20.5: screen capture of java programs from ubuntu server are
missing visual components
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 Reporter:  amkearns-usgs                     |      Owner:  jeremyhu@…
     Type:  defect                            |     Status:  assigned
 Priority:  Normal                            |  Milestone:
Component:  ports                             |    Version:  2.5.4
 Keywords:  xorg-server, x11, graphics, java  |       Port:  xorg-server
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 Using Ubuntu LTS 18.04.2, xorg-server displays java applications correctly
 but fails to properly render saved screenshots of these applications,
 causing some outlines and GUI data to be lost when doing a screen capture.
 This issue occurs when color depth is set to values greater than 256; when
 set at 256 color the programs render their screenshots correctly, but
 sometimes have their fonts rendered in a way that the programs are nearly
 unusable, and as a result this is not a suitable workaround.

 In the attached images the screen capture of the program running under
 Ubuntu has a terminal window with transparency increased placed over it.
 In places where the image capture utility must render images with alpha
 components, the otherwise-missing GUI components become visible underneath
 them.

 The expected output has a timestamp in the file of 4.43.29 PM and the
 received outputs are stamped at 4.46.36 (with the terminal overlay showing
 the missing GUI components behind it) and 6.05.00.

 This is **only** an issue for screen captures. The windows render
 correctly on the display.

 This issue does not occur on Windows clients connecting to the server with
 their x11 server applications.

 Prior to Ubuntu our servers were using Scientific Linux 6, which did not
 have this issue. However, using xorg-server (or XQuartz) with Scientific
 Linux 7 and Ubuntu both share this issue. We are not certain of what
 configurations on the server would have changed in the process of
 upgrading that would affect this, but we are also not sure why only Mac
 connections to the server are affected by this.

 The program we have taken these screenshots of is available on github to
 test with, should that be of interest: https://github.com/usgs/xmax

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Ticket URL: <https://trac.macports.org/ticket/58922>
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