diff --git a/themes/tiddlywiki/vanilla/base.tid b/themes/tiddlywiki/vanilla/base.tid
index f8d528cd1..f2e50ae78 100644
--- a/themes/tiddlywiki/vanilla/base.tid
+++ b/themes/tiddlywiki/vanilla/base.tid
@@ -1367,6 +1367,7 @@ canvas.tc-edit-bitmapeditor  {
 	padding: 0 2px 2px 42px;
 	color: <<colour static-alert-foreground>>;
 	position: absolute;
+	z-index: 100;
 }
 
 /*