[Development] Qt/XCB applications and deadkeys and ibus (which cease working) (and sometimes the entire keyboard in Konsole)

[René J. V. Bertin]

And one more thing: I haven't been seeing the issue I reported originally since 
getting rid of the ibus stuff as described earlier in this thread. Uninstalling 
at-spi2-core must have been the real fix as I installed ibus in one of my 
attempts to get a grip on the issue.