[Gambas-bugtracker] Bug #1979: The background color of ToolButton is incorrect display in GB.GTK3 component

[bugtracker at gambaswiki.org]

http://gambaswiki.org/bugtracker/edit?object=BUG.1979&from=L21haW4-

Comment #3 by Benoît MINISINI:

Everything is normal. The result of setting the background color of a Tooltip button seems to be broken only on gb.gtk.

If you want to change the background color only on mouse over, you have to use the Enter and Leave events.