Re: Empty tooltips under X

[Eli Zaretskii]

> Date: Wed, 28 Oct 2015 20:20:23 +0100
> From: martin rudalics <address@hidden>
> 
>  >> Indeed, GTK+ tooltip support still works.  What happens when you set
>  >> ‘x-gtk-use-system-tooltips’ to nil?
>  >
>  > The text is still shown.  Because the tooltips looks identical to the
>  > GTK version, I also stepped thru `x-show-tip' in order to validate we're
>  > really using Emacs' own tooltip code.
> 
> Looks like a Heisenbug.  Sometimes the tooltip is shown for a very short
> moment only, sometimes it's shown quite normally, sometimes not at all.

If you invoke trace-redisplay (after turning off blink-cursor-mode),
then make the tooltip appear several times, do you see different
traces depending on whether you see or don't see the text?