Combinations of gtk transient/present settings that WORK on different
window managers:


reporter  gtk            wm          transient_modal transient_modeless present
-------------------------------------------------------------------------------
Igor2     2.24.32      pidwm2               *               *              *
Igor2     2.24.32      icewm 1.4.3          *               *              *
Joe       2.24.32      gdm3                 0               *              *
Bdale     2.24.32-4    xfce, awesome        *               0              *
-------------------------------------------------------------------------------


Config nodes: plugins/hid_gtk/dialog/*

Modal dialog: place a via, right click on it, edit geometry/prototype

Modeless dialog: edit button under the route styles (bottom left on top window)


Always broken:

reporter  gtk            wm          transient_modal transient_modeless present
-------------------------------------------------------------------------------
Bdale     2.24.32-4    xfce, xfwm           -               -              -
-------------------------------------------------------------------------------