diff --git a/components/plugins/plugin-iframe-slot.tsx b/components/plugins/plugin-iframe-slot.tsx
index a5470318b..761b18d12 100644
--- a/components/plugins/plugin-iframe-slot.tsx
+++ b/components/plugins/plugin-iframe-slot.tsx
@@ -190,8 +190,9 @@ export function PluginIframeSlot({ pluginId, slot, extraProps, fill = false, min
       <div
         ref={wrapperRef}
         style={inline
-          ? { display: 'inline-block', verticalAlign: 'middle', height, width: width ?? 0, maxWidth: '100%', overflow: 'hidden' }
-          : fill ? { flex: '1 1 0%', minHeight: minFillHeight ?? 0 } : { height, minHeight: height }}
+          ? { display: 'inline-block', verticalAlign: 'middle', height, width: width ?? 0, maxWidth: '100%', overflow: 'hidden', visibility: height > 0 ? undefined : 'hidden' }
+          // A frame with nothing to show must not be a stop for Tab, where the focus would vanish.
+          : fill ? { flex: '1 1 0%', minHeight: minFillHeight ?? 0 } : { height, minHeight: height, visibility: height > 0 ? undefined : 'hidden' }}
         data-plugin-iframe-slot={`${pluginId}:${slot}`}
         data-plugin-iframe-fill={fill || undefined}
       />