after all the updates, the bug is still there, and i believe it's the same
anyway, as joachim backes kindly suggested,
yum downgrade at-spi2-atk
fixed the problem, for now.
Among the maxims on Lord Naoshige's wall, there was this one: "Matters of
great concern should be treated lightly." Master Ittei commented, "Matters
of small concern should be treated seriously."
(Ghost Dog : The Way of The Samurai)