Created attachment 8293 Empty tooltip Desktop files with no comment field or an empty string in the comment field will have an empty tooltip in the whisker menu. Please see screenshot attached.
Unfortunately, I don't see a way to do this. Whisker Menu doesn't directly control showing the tooltips; it simply tells the GtkTreeView which model column contains the tooltips and leaves it up to GTK to determine when and how to show the tooltips.
So do you think it would make sense to file a bug in the GTK bug tracker?
I opened a bug in the Gtk bug tracker: https://gitlab.gnome.org/GNOME/gtk/issues/1681
The developers from GTK already answered. Please have a look.
The GTK developers already fixed it but there is also an API you can use.
Thank you for looking into this and letting me know.
Graeme Gott referenced this bugreport in commit 992078c7e84bf320d960bab09e4dc1f900507b0c Fix displaying empty tooltips. (bug #15137) https://git.xfce.org/panel-plugins/xfce4-whiskermenu-plugin/commit?id=992078c7e84bf320d960bab09e4dc1f900507b0c
Many thanks for the patch. Patch has been tested and works fine :)