diff --git a/pkg/parser/frontmatter_content.go b/pkg/parser/frontmatter_content.go
index e736ac1b83f..203ad073c65 100644
--- a/pkg/parser/frontmatter_content.go
+++ b/pkg/parser/frontmatter_content.go
@@ -55,6 +55,9 @@ func ExtractFrontmatterFromContent(content string) (*FrontmatterResult, error) {
 	frontmatterLines := lines[1:endIndex]
 	frontmatterYAML := strings.Join(frontmatterLines, "\n")
 
+	// Sanitize no-break whitespace characters (U+00A0) which break the YAML parser
+	frontmatterYAML = strings.ReplaceAll(frontmatterYAML, "\u00A0", " ")
+
 	// Parse YAML
 	var frontmatter map[string]any
 	if err := yaml.Unmarshal([]byte(frontmatterYAML), &frontmatter); err != nil {
diff --git a/pkg/parser/frontmatter_extraction_test.go b/pkg/parser/frontmatter_extraction_test.go
index 10a9b69e3a2..77e342e510d 100644
--- a/pkg/parser/frontmatter_extraction_test.go
+++ b/pkg/parser/frontmatter_extraction_test.go
@@ -55,6 +55,15 @@ This is a test workflow with empty frontmatter.`,
 			content: "---\ntitle: Test\nno closing delimiter",
 			wantErr: true,
 		},
+		{
+			name:    "no-break whitespace in values",
+			content: "---\ntitle:\u00A0Test\u00A0Workflow\nengine:\u00A0copilot\n---\n\n# Content",
+			wantYAML: map[string]any{
+				"title":  "Test Workflow",
+				"engine": "copilot",
+			},
+			wantMarkdown: "# Content",
+		},
 	}
 
 	for _, tt := range tests {