pyqt5 - Qt5 widgets seem slow to respond (redraw) after a click or a hover in i3 window manager -

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while using favorite window manager i3 on fedora core 24, have upgraded pyqt5 pyqt4 working perfectly. started minimal example:

import sys pyqt5.qtwidgets import (     qapplication,     qpushbutton,     qvboxlayout,     qwidget, )  def test():     app = qapplication(sys.argv)     window = qwidget()     lo = qvboxlayout()     window.setlayout(lo)     in range(10):         btn = qpushbutton(str(i))         lo.addwidget(btn)     window.show()     sys.exit(app.exec_())  if __name__ == '__main__':     test()

what saw:

the widget's buttons not responsive. i.e. appearance slow update , feels laggy after click. if window loses focus (by moving mouse out example) buttons update immediately. happens when using i3, other wms don't seem have problem (tested on gnome).

a yet stranger behavior observed sometimes: after clicking button looks clicked 5 seconds, appears in normal state next 5 seconds, clicked state!

what expected instead:

a smooth gui behavior similar pyqt4

further info

output of i3 --moreversion 2>&- || i3 --version:

binary i3 version:  4.12 (2016-03-06, branch "4.12") © 2009 michael stapelberg , contributors running i3 version: 4.12 (2016-03-06, branch "4.12") (pid 17904) loaded i3 config: /home/username/.i3/config (last modified: wed 27 jul 2016 01:49:50 pm cest, 2497 seconds ago)  i3 binary called: /usr/bin/i3 i3 binary running: i3

my logfile: http://logs.i3wm.org/logs/5631496962441216.bz2


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