when I use Alt-F4 to close the window, the response is slow, about 1s slower than clicking the close button using mouse. however, if I change the hotkey from Alt-F4 to others, such as Alt-4, it is as quick as using mouse
Do you have any input method helpers installed, such as ibus or fcitx?
(In reply to Christoph Feck from comment #1) > Do you have any input method helpers installed, such as ibus or fcitx? yes, I had installed fcitx
Please report this to the fcitx developers. Thanks!