google-chrome: cannot attach tab back to a window

[stdedos]

Details from #2649:

• Start a google-chrome (make sure no other instances of chrome are running)
• Open two tabs
• Detach one tab
• Try to re-attach it using the mouse

I assume that there are X hacks in play; I am fine if you target: future or won't-fix.

[Antoine Martin]

I believe this used to work, so it should be fixable.

[stdedos]

While acting weird (two maximized windows want to steal each others tab when trying to relocate it within the same window), the process seems to work

"Xpra-Python3_4.0.2-r26623\xpra_cmd" attach ssh://user@ip/2 --ssh="plink -ssh -agent" --modal-windows=no --title="@title@ on @@/@server-display@" --opengl=no --bandwidth-limit=6Mbps

2020-06-30 11:30:26,900 Xpra GTK3 client version 4.0.2-r26623 32-bit
2020-06-30 11:30:26,902  running on Microsoft Windows 10
2020-06-30 11:30:27,683 GStreamer version 1.16.2 for Python 3.8.3 32-bit
2020-06-30 11:30:28,129 keyboard layout code 0x409
2020-06-30 11:30:28,130 identified as 'United States - English' : us
2020-06-30 11:30:28,418  keyboard settings: layout=us
2020-06-30 11:30:28,422  desktop size is 4160x1440 with 1 screen:
2020-06-30 11:30:28,422   Default (1100x380 mm - DPI: 96x96) workarea: 4160x1400
2020-06-30 11:30:28,422     Generic PnP Monitor 1600x900 at 0x534 (309x174 mm - DPI: 131x131) workarea: 1600x860
2020-06-30 11:30:28,423     C32JG5x 2560x1440 at 1600x0 (697x392 mm - DPI: 93x93) workarea: 2560x1400
2020-06-30 11:30:42,675 enabled remote logging
2020-06-30 11:30:42,676 Xpra GTK3 X11 server version 3.0.10-r26630 64-bit
2020-06-30 11:30:42,677  running on Linux Ubuntu 16.04 xenial
2020-06-30 11:30:42,683 Attached to ip:22
2020-06-30 11:30:42,684  (press Control-C to detach)

2020-06-30 11:30:44,667 server is not responding, drawing spinners over the windows

(xpra_cmd:17828): Pango-WARNING **: 11:30:45.350: couldn't load font "Bitstream Vera Sans Not-Rotated 14.662109375", falling back to "Sans Not-Rotated 14.662109375", expect ugly output.
2020-06-30 11:30:45,369 server is OK again

Unrelated to the ticket above, those versions seem to be the stable-est ones available.
Please try to preserve them upstream.
(Or maybe fork-bombing the server fixed everything 😂, idk)

[migration script]

this ticket has been moved to: ​https://github.com/Xpra-org/xpra/issues/2650