With the update to 20180606 (on both systems) I find that I cannot run (for example) konsole or kate remotely using ssh -X.
ssh -X 192.168.1.2 konsole
An unresponsive window appears without contents.
If I do
ssh -X 192.168.1.2 xterm
that works fine.
If from that xterm I attempt to start konsole on the remote system, I get the same kind of unresponsive window.
If I destroy that window I see the following error:
QXcbShmImage: xcb_shm_create_segment() failed for size 8716800
Are others seeing the same behaviour? Should I open a bug report for this?