1 files changed, 12 insertions, 3 deletions
diff --git a/lib/extensions/base.py b/lib/extensions/base.py
index 949f947e..cf94714c 100644
--- a/lib/extensions/base.py
+++ b/lib/extensions/base.py
@@ -8,10 +8,12 @@ import os
 import re
 from collections.abc import MutableMapping
 
-import inkex
 from lxml import etree
+from lxml.etree import Comment
 from stringcase import snakecase
 
+import inkex
+
 from ..commands import is_command, layer_commands
 from ..elements import EmbroideryElement, nodes_to_elements
 from ..elements.clone import is_clone
@@ -19,7 +21,8 @@ from ..i18n import _
 from ..marker import has_marker
 from ..svg import generate_unique_id
 from ..svg.tags import (CONNECTOR_TYPE, EMBROIDERABLE_TAGS, INKSCAPE_GROUPMODE,
-                        NOT_EMBROIDERABLE_TAGS, SVG_DEFS_TAG, SVG_GROUP_TAG)
+                        NOT_EMBROIDERABLE_TAGS, SVG_CLIPPATH_TAG, SVG_DEFS_TAG,
+                        SVG_GROUP_TAG, SVG_MASK_TAG)
 
 SVG_METADATA_TAG = inkex.addNS("metadata", "svg")
 
@@ -129,6 +132,10 @@ class InkstitchExtension(inkex.Effect):
 
     def descendants(self, node, selected=False, troubleshoot=False):  # noqa: C901
         nodes = []
+
+        if node.tag == Comment:
+            return []
+
         element = EmbroideryElement(node)
 
         if element.has_command('ignore_object'):
@@ -141,7 +148,9 @@ class InkstitchExtension(inkex.Effect):
         if (node.tag in EMBROIDERABLE_TAGS or node.tag == SVG_GROUP_TAG) and element.get_style('display', 'inline') is None:
             return []
 
-        if node.tag == SVG_DEFS_TAG:
+        # defs, masks and clippaths can contain embroiderable elements
+        # but should never be rendered directly.
+        if node.tag in [SVG_DEFS_TAG, SVG_MASK_TAG, SVG_CLIPPATH_TAG]:
             return []
 
         # command connectors with a fill color set, will glitch into the elements list