#2887: Fix FF issues for keydown
#2887: Fix FF issues for keydown

lsaffre/lino,lsaffre/lino,lino-framework/lino,lino-framework/lino,lino-framework/lino,lino-framework/lino,lsaffre/lino,lsaffre/lino,lsaffre/lino,lino-framework/lino