[ubuntu-x] Multiple apps hitting "xcb_io.c:140: dequeue_pending_request: Assertion `req == dpy->xcb->pending_requests' failed" - is this fd.o bug 29412?

[Dan Kegel]

https://bugs.launchpad.net/bugs/+bugs?field.searchtext=dequeue_pending_request
shows about 8 issues with this message, including unity.

Is this https://bugs.freedesktop.org/show_bug.cgi?id=29412  ?

Aside: In the past, when I've hit this error in Wine, I've worked around it by
using taskset to bind the app to a single core to reduce the
concurrency.