[gedit] Window: fullscreen mode: add comment about the "stuttering" fix

[Sébastien Wilmet <swilmet src gnome org>]

commit a437e524539253a17d263325f037d127fbde0c69
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Thu Nov 28 07:21:14 2019 +0100

    Window: fullscreen mode: add comment about the "stuttering" fix
    
    Tested with GNOME 3.32 on Fedora 30. (Yes I know Fedora 31 has been
    released, but its kernel version breaks my touchpad, I've reported the
    bug but it's not fixed yet).

 gedit/gedit-window.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/gedit/gedit-window.c b/gedit/gedit-window.c
index fb1f6ab8d..88078d1c8 100644
--- a/gedit/gedit-window.c
+++ b/gedit/gedit-window.c
@@ -1778,6 +1778,9 @@ on_fullscreen_eventbox_leave_notify_event (GtkWidget        *fullscreen_eventbox
                 * heuristic/workaround is not perfect in that case. But that
                 * case is quite rare, so it's probably a good enough solution.
                 *
+                * Note that apparently the "stuttering" occurs only on an Xorg
+                * session, not on Wayland (tested with GNOME).
+                *
                 * If you see a better solution...
                 */
                return GDK_EVENT_PROPAGATE;