fixed strumline drop down with different zooms

source/funkin/backend/utils/CoolUtil.hx

@@ -37,6 +37,7 @@ import haxe.io.Path;
 import haxe.xml.Access;
 import lime.utils.Assets;
 import openfl.geom.ColorTransform;
+import flixel.math.FlxPoint;
 
 using StringTools;
 
@@ -846,6 +847,26 @@ class CoolUtil
 		return angle - diff;
 	}
 
+	/**
+	 * Returns the screen position of an object, while taking the camera zoom into account.
+	 *
+	 * @param	object	Any `FlxObject`
+	 * @param   camera  The desired "screen" coordinate space. If `null`, `FlxG.camera` is used.
+	 * @param   result  Optional arg for the returning point
+	 * @return  The screen position of the object.
+	 */
+	public static function worldToScreenPosition(object:FlxObject, ?camera:FlxCamera, ?result:FlxPoint) {
+		if (result == null)
+			result = FlxPoint.get();
+		if (camera == null)
+			camera = FlxG.camera;
+
+		result.set(object.x, object.y);
+		result.x = (((result.x - camera.scroll.x * object.scrollFactor.x) * camera.zoom) - ((camera.width * 0.5) * (camera.zoom - camera.initialZoom)));
+		result.y = (((result.y - camera.scroll.y * object.scrollFactor.y) * camera.zoom) - ((camera.height * 0.5) * (camera.zoom - camera.initialZoom)));
+		return result;
+	}
+
 	public static function sortAlphabetically(array:Array<String>, ?lowercase:Bool=false) {
 		array.sort(function(a1, a2):Int {
 			if(lowercase) {

source/funkin/editors/charter/CharterStrumline.hx

@@ -203,6 +203,9 @@ class CharterStrumlineOptions extends UITopMenuButton {
 
 		contextMenu.insert(1+Charter.waveformHandler.waveformList.length, null);
 
-		super.openContextMenu();
+		var cam = Charter.instance.charterCamera;
+		var point = CoolUtil.worldToScreenPosition(this, cam);
+		curMenu = UIState.state.openContextMenu(contextMenu, null, point.x, point.y + (bHeight*cam.zoom), Std.int(bWidth * cam.zoom));
+		point.put();
 	}
 }