diff --git a/frontend/src/lib/linkml/linkml-schema-service.ts b/frontend/src/lib/linkml/linkml-schema-service.ts
index 67e2ec695c..bfc8947e42 100644
--- a/frontend/src/lib/linkml/linkml-schema-service.ts
+++ b/frontend/src/lib/linkml/linkml-schema-service.ts
@@ -1018,14 +1018,43 @@ class LinkMLSchemaService {
     if (!annotations?.custodian_types) {
       return null;
     }
-    // Handle both string array and comma-separated string formats
-    const types = annotations.custodian_types;
+    return this.parseCustodianTypesAnnotation(annotations.custodian_types);
+  }
+  
+  /**
+   * Parse custodian_types annotation value into string array
+   * Handles multiple formats:
+   * - Array: ["A", "L", "M"]
+   * - JSON stringified array: '["A", "L"]' or '["A"]'
+   * - Comma-separated string: "A, L, M"
+   * - Single value: "A"
+   */
+  private parseCustodianTypesAnnotation(types: unknown): string[] | null {
+    // Already an array
     if (Array.isArray(types)) {
       return types as string[];
     }
+    
     if (typeof types === 'string') {
-      return types.split(',').map((t: string) => t.trim());
+      const trimmed = types.trim();
+      
+      // Check if it's a JSON stringified array (starts with '[' and ends with ']')
+      if (trimmed.startsWith('[') && trimmed.endsWith(']')) {
+        try {
+          const parsed = JSON.parse(trimmed);
+          if (Array.isArray(parsed)) {
+            return parsed.map((t: unknown) => String(t).trim());
+          }
+        } catch {
+          // JSON parse failed, fall through to comma-separated handling
+          console.warn(`[LinkMLSchemaService] Failed to parse custodian_types JSON: ${trimmed}`);
+        }
+      }
+      
+      // Comma-separated string or single value
+      return trimmed.split(',').map((t: string) => t.trim()).filter(t => t.length > 0);
     }
+    
     return null;
   }
 
@@ -1039,14 +1068,7 @@ class LinkMLSchemaService {
     if (!slot?.annotations?.custodian_types) {
       return null;
     }
-    const types = slot.annotations.custodian_types;
-    if (Array.isArray(types)) {
-      return types as string[];
-    }
-    if (typeof types === 'string') {
-      return types.split(',').map((t: string) => t.trim());
-    }
-    return null;
+    return this.parseCustodianTypesAnnotation(slot.annotations.custodian_types);
   }
 
   /**
@@ -1061,12 +1083,7 @@ class LinkMLSchemaService {
     // Currently enum annotations might be on individual values
     if ((enumDef as unknown as { annotations?: Record<string, unknown> })?.annotations?.custodian_types) {
       const types = (enumDef as unknown as { annotations: Record<string, unknown> }).annotations.custodian_types;
-      if (Array.isArray(types)) {
-        return types as string[];
-      }
-      if (typeof types === 'string') {
-        return types.split(',').map((t: string) => t.trim());
-      }
+      return this.parseCustodianTypesAnnotation(types);
     }
     return null;
   }
diff --git a/frontend/src/pages/LinkMLViewerPage.tsx b/frontend/src/pages/LinkMLViewerPage.tsx
index 342f7e9bc4..7c61d0fceb 100644
--- a/frontend/src/pages/LinkMLViewerPage.tsx
+++ b/frontend/src/pages/LinkMLViewerPage.tsx
@@ -1145,7 +1145,7 @@ const LinkMLViewerPage: React.FC = () => {
               showTooltip={true}
               hoveredType={hoveredCustodianType}
               onTypeHover={setHoveredCustodianType}
-              onFaceClick={handleCustodianTypeFilter}
+              // Removed onFaceClick - cube should be decorative, not trigger filtering
               className="linkml-viewer__custodian-indicator"
             />
           ) : (
@@ -1229,7 +1229,7 @@ const LinkMLViewerPage: React.FC = () => {
               showTooltip={true}
               hoveredType={hoveredCustodianType}
               onTypeHover={setHoveredCustodianType}
-              onFaceClick={handleCustodianTypeFilter}
+              // Removed onFaceClick - cube should be decorative, not trigger filtering
               className="linkml-viewer__custodian-indicator"
             />
           ) : (
@@ -1242,12 +1242,6 @@ const LinkMLViewerPage: React.FC = () => {
             )
           )}
         </h4>
-        {slot.slot_uri && (
-          <div className="linkml-viewer__uri">
-            <span className="linkml-viewer__label">{t('uri')}</span>
-            <code>{slot.slot_uri}</code>
-          </div>
-        )}
         {slot.range && (
           <div className="linkml-viewer__range">
             <span className="linkml-viewer__label">{t('range')}</span>
@@ -1322,7 +1316,7 @@ const LinkMLViewerPage: React.FC = () => {
               showTooltip={true}
               hoveredType={hoveredCustodianType}
               onTypeHover={setHoveredCustodianType}
-              onFaceClick={handleCustodianTypeFilter}
+              // Removed onFaceClick - cube should be decorative, not trigger filtering
               className="linkml-viewer__custodian-indicator"
             />
           ) : (