diff --git a/slide/Drawing/DrawingDocument.js b/slide/Drawing/DrawingDocument.js
index 650c790e83..e900c8b728 100644
--- a/slide/Drawing/DrawingDocument.js
+++ b/slide/Drawing/DrawingDocument.js
@@ -4797,8 +4797,9 @@ function CThumbnailsManager(editorPage)
 
 		const delta = GetWheelDeltaY(e);
 		const isHorizontalOrientation = oThis.m_oWordControl.thumbnailsPosition === thumbnailsPositionMap.bottom;
+		const isRightToLeft = oThis.m_oWordControl.isRTL;
 		isHorizontalOrientation
-			? oThis.m_oWordControl.m_oScrollThumbApi.scrollBy(delta, 0)
+			? oThis.m_oWordControl.m_oScrollThumbApi.scrollBy(isRightToLeft ? -delta : delta, 0)
 			: oThis.m_oWordControl.m_oScrollThumbApi.scrollBy(0, delta, false);
 
 		if (e.preventDefault)
diff --git a/slide/Drawing/HtmlPage.js b/slide/Drawing/HtmlPage.js
index 0635ec15d4..7e096b1616 100644
--- a/slide/Drawing/HtmlPage.js
+++ b/slide/Drawing/HtmlPage.js
@@ -300,7 +300,7 @@
 		this.MouseHandObject = null;
 
 		this.m_oApi = api;
-		this.thumbnailsPosition = thumbnailsPositionMap.right; // left, right, bottom
+		this.thumbnailsPosition = thumbnailsPositionMap.bottom; // left, right, bottom
 		this.isRTL = true;
 		oThis = this;
 	}