run.exe fails to start XWin on Windows 8.1 through the shortcut

[Jaakov Jaakov]

XWin fails to start again (previously reported half a year ago or so).

The command issued by a shortcut is
C:\cygwin64\bin\run.exe --quote /usr/bin/bash.exe -l -c "cd; /usr/bin/startxwin"
Upon starting the shortcut, there is some disc acitivty, but no window opens, and no XWin processes show up (according to the later-called Task Manager).
No files in the directory /var/log/xwin are updated.
The file C:\cygwin64\run.exe.stackdump is generated, containing
Stack trace:
Frame         Function     Args
00000235490   0018007256A (0000023E3F4, 00000000000, 00000000000, 0000023DE50)
00000235530   00180073D33 (00000000064, 00000000000, 00000000194, 00000000000)
00000235780   0018012DFEF (0018006BBC3, 000002358E0, 00000000000, 00000000030)
00000235A70   0018012AD90 (0018004339D, 1D0D4F100000000, 00000000000, 00000080000)
00000235C08   0018012B259 (0018014CA5F, 006000180E8, 0018014C94F, 00000000006)
00000235C08   0018012B42C (00600041200, 00600041200, 00600041200, 00000000000)
00000235C08   0018012B6EF (00600041200, 00000000000, 00000235C10, 00000235C10)
00000235C08   001801612DA (00000000104, 00002080064, 00100406000, 00000235C10)
00000235C08   001800CD933 (7FF892714196, 00000000025, 10400000064, 00000000000)
00000235C08   00180126D5B (7FF892714196, 00000000025, 10400000064, 00000000000)
00000235C08   001004011CC (00000000004, 001004070F4, 7FF895624F07, 00000280000)
00600041140   00100404DA8 (00000000000, 0000023CBC0, 00000000000, 00000000001)
0000023CBC0   00180048410 (7FF8909A0000, 0000028ADC0, 7FF5FFFFD001, 7FF800120010)
00000000000   001800460DC (7FF890BC17E9, 00000000000, 7FF8909A13F0, 7FF890BE9FB8)
00000000000   00180046174 (00000000000, 00000000000, 00000000000, 00000000000)
00000000000   001004036D1 (00000000000, 00000000000, 00000000000, 00000000000)
End of stack trace (more stack frames may be present)

run.exe has version 1.3.3-1.
The output of cygcheck doesn't pass the spam check and can be sent privately.
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