Issue #9282 : deleting a rect node => black squares instead of symbolic icons

icons/Default/scalable/gimp-selection-to-channel-symbolic.svg

@@ -14,8 +14,8 @@
    height="16.000959"
    width="16"
    version="1.1"
-   inkscape:version="0.91 r13725"
-   sodipodi:docname="gimp-selection-to-channel.svg">
+   inkscape:version="1.0.2 (e86c870879, 2021-01-15)"
+   sodipodi:docname="gimp-selection-to-channel-symbolic.svg">
   <sodipodi:namedview
      pagecolor="#ffffff"
      bordercolor="#666666"
@@ -25,17 +25,18 @@
      guidetolerance="10"
      inkscape:pageopacity="0"
      inkscape:pageshadow="2"
-     inkscape:window-width="640"
-     inkscape:window-height="480"
+     inkscape:window-width="1920"
+     inkscape:window-height="1051"
      id="namedview1522"
      showgrid="false"
      inkscape:zoom="14.749116"
-     inkscape:cx="-589.60064"
-     inkscape:cy="1004.9951"
-     inkscape:window-x="0"
-     inkscape:window-y="27"
-     inkscape:window-maximized="0"
-     inkscape:current-layer="svg7384" />
+     inkscape:cx="8"
+     inkscape:cy="8.0004797"
+     inkscape:window-x="1600"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg7384"
+     inkscape:document-rotation="0" />
   <metadata
      id="metadata90">
     <rdf:RDF>
@@ -277,13 +278,6 @@
          height="11"
          x="12"
          y="1039.3622" />
-      <rect
-         style="fill:none;stroke:none;stroke-width:0.99997187"
-         id="rect74851-6-35"
-         width="16"
-         height="16"
-         x="3.642578e-07"
-         y="1036.3632" />
       <rect
          style="fill:url(#linearGradient8175);fill-opacity:1;stroke:none;stroke-width:0.99997187"
          id="rect74853-6-5"

icons/Default/scalable/gimp-selection-to-path-symbolic.svg

@@ -379,14 +379,6 @@
            inkscape:label="#selection_reverse"
            id="path-reverse-6"
            transform="matrix(0.98384086,0,0,0.98150517,-162.15873,204.79257)">
-          <rect
-             style="fill:none;fill-opacity:1;stroke:none"
-             id="rect15611-98"
-             width="16"
-             height="16"
-             x="165"
-             y="335"
-             transform="translate(0,512.36218)" />
           <path
              style="color:#000000;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:medium;line-height:normal;font-family:sans-serif;font-variant-ligatures:normal;font-variant-position:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-alternates:normal;font-feature-settings:normal;text-indent:0;text-align:start;text-decoration:none;text-decoration-line:none;text-decoration-style:solid;text-decoration-color:#000000;letter-spacing:normal;word-spacing:normal;text-transform:none;writing-mode:lr-tb;direction:ltr;text-orientation:mixed;dominant-baseline:auto;baseline-shift:baseline;text-anchor:start;white-space:normal;shape-padding:0;clip-rule:nonzero;display:inline;overflow:visible;visibility:visible;opacity:1;isolation:auto;mix-blend-mode:normal;color-interpolation:sRGB;color-interpolation-filters:linearRGB;solid-color:#000000;solid-opacity:1;vector-effect:none;fill:url(#linearGradient8243-8);fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:1.0176332;stroke-linecap:square;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1;color-rendering:auto;image-rendering:auto;shape-rendering:auto;text-rendering:auto;enable-background:accumulate"
              d="m 179.82617,847.58008 -0.21679,0.46094 c 0,0 -2.28883,4.79743 -5.23829,7.7539 -2.95192,2.95896 -8.01171,5.58399 -8.01171,5.58399 l -0.45313,0.23242 0.46484,0.90429 0.45313,-0.23242 c 0,0 5.12096,-2.61542 8.26758,-5.76953 3.1491,-3.15659 5.4375,-8.03906 5.4375,-8.03906 l 0.21679,-0.45899 z"