diff --git a/mibpov.js b/mibpov.js
index 45faded..297a27d 100644
--- a/mibpov.js
+++ b/mibpov.js
@@ -1445,7 +1445,7 @@ let dragDropState = 0;
 /* Move and update the biome point while the user
 is dragging it */
 function updatePointWhenDragged(pointID) {
-	if (pointID !== null && !drawError) {
+	if (pointID !== null && !drawError && biomeMode === "modern") {
 		let selectedPoint = null;
 		let points = getRenderedPoints(getViewY());
 		for (let i=0; i<points.length; i++) {
@@ -1539,7 +1539,7 @@ function updateCanvasCursorStatus(x, y) {
 		return
 	}
 
-	if (drawError || !showPoints) {
+	if (drawError || !showPoints || biomeMode === "v6") {
 		// a special message is shown; use auto cursor
 		voronoiCanvas.style.cursor = "auto";
 		return
@@ -1733,7 +1733,7 @@ voronoiCanvas.onmousedown = function(event) {
 		return;
 	}
 
-	if (drawError || !showPoints) {
+	if (drawError || !showPoints || biomeMode === "v6") {
 		// Points need to be shown for drag-n-drop to work
 		return;
 	}
@@ -1754,7 +1754,7 @@ voronoiCanvas.onmousedown = function(event) {
 }
 voronoiCanvas.ondblclick = function(event) {
 	// Add a biome at double-click position, if possible
-	if (drawError || dragDropState !== 0) {
+	if (drawError || dragDropState !== 0 || biomeMode === "v6") {
 		return;
 	}
 	// No-op if in selection range