Hi,
This issue still persists with gnome-shell 3.28.0 and rxvt-unicode 9.22-3.
For now I've been applying this patch in order to make it work as expected.
Index: rxvt-unicode-9.22/src/init.C
===================================================================
--- rxvt-unicode-9.22.orig/src/init.C
+++ rxvt-unicode-9.22/src/init.C
@@ -1301,7 +1301,7 @@ rxvt_term::create_windows (int argc, con
#if ENABLE_FRILLS
if (option (Opt_borderLess))
{
- if (XInternAtom (dpy, "_MOTIF_WM_INFO", True) == None)
+ if ((XInternAtom (dpy, "_MOTIF_WM_INFO", True) == None) &&
(XInternAtom (dpy, "_MOTIF_WM_HINTS", True) == None))
{
// rxvt_warn("Window Manager does not support MWM hints.
Bypassing window manager control for borderless window.\n");
attributes.override_redirect = true;
Regards
Micke
