Fix issue with bounding boxes not being properly displayed on Firefox. (#1036)

Author: romanowska

web_ui/src/pages/annotator/annotation/layers/layer.component.tsx

@@ -64,7 +64,7 @@ export const Layer = ({
                                     annotation={annotation}
                                     selectedTask={selectedTask}
                                     isPredictionMode={isPredictionMode}
-                                    maskId={`url(#${maskId})`}
+                                    maskId={isNonEmptyArray(savedMasks) ? `url(#${maskId})` : undefined}
                                 />
                             </svg>
                         )}