On Jul 15, 2020, at 9:36 AM, pd-list-request@lists.iem.at wrote:

Date: Wed, 15 Jul 2020 09:36:58 +0200
From: Antoine Villeret <antoine.villeret@gmail.com>
To: Pd-List <pd-list@lists.iem.at>
Subject: Re: [PD] Pd 0.50-2 on macos 11.0 BigSur beta
Message-ID:
<CAGn5wNer540FZuyKPaTS7hggqWpgjzqCvgxXODLRam+ueKVD_g@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hi IOhannes,

I tried your patch as following :

% git diff tcl/pdtk_canvas.tcl
diff --git a/tcl/pdtk_canvas.tcl b/tcl/pdtk_canvas.tcl
index b4be07b3..3d1930fa 100644
--- a/tcl/pdtk_canvas.tcl
+++ b/tcl/pdtk_canvas.tcl
@@ -117,7 +117,8 @@ proc pdtk_canvas_new {mytoplevel width height geometry
editable} {
    canvas $tkcanvas -width $width -height $height \
        -highlightthickness 0 -scrollregion [list 0 0 $width $height] \
        -xscrollcommand "$mytoplevel.xscroll set" \
-        -yscrollcommand "$mytoplevel.yscroll set"
+        -yscrollcommand "$mytoplevel.yscroll set" \
+        -background white
    scrollbar $mytoplevel.xscroll -orient horizontal -command "$tkcanvas
xview"
    scrollbar $mytoplevel.yscroll -orient vertical -command "$tkcanvas
yview"
    pack $tkcanvas -side left -expand 1 -fill both

% make clean
% make -j16
% mac/osx-app.sh 0.51-0patched

but got the same result : transparent patcher window (without title bar
because I didn't override Wish)

cheers