diff --git a/2D/js/main.js b/2D/js/main.js
index eabd4ff..f068d8a 100644
--- a/2D/js/main.js
+++ b/2D/js/main.js
@@ -101,7 +101,7 @@ class MainApp {
 					this.gridBoard.grid[row][col] = '#000000';
 				}
 				this.redraw();
-			}
+			} else { this.isBlackening = false; this.canvas.style.cursor = 'default'; }
 		} else {
 			let clickedOnIcon = false;
 			if (this.selectedPolyomino) {
@@ -123,9 +123,7 @@ class MainApp {
 						break;
 					}
 				}
-				if (!selected) {
-					this.selectedPolyomino = null;
-				}
+				if (!selected) { this.selectedPolyomino = null; }
 			}
 			this.redraw();
 		}
@@ -141,9 +139,6 @@ class MainApp {
 		this.redraw();
 	};
 
-	enableBlackening() { this.isBlackening = true; document.body.style.cursor = 'url("../assets/cursor_blackend.png"), auto'; };
-	disableBlackening() { this.isBlackening = false; document.body.style.cursor = 'default'; };
-
 	redraw() {
 		if (!this.needsRedraw) return;
 		this.gridBoard.clear();
diff --git a/2D/js/polyomino.js b/2D/js/polyomino.js
index 54b17a1..10b8e6e 100644
--- a/2D/js/polyomino.js
+++ b/2D/js/polyomino.js
@@ -92,21 +92,11 @@ export class Polyomino {
 
 	handleIconClick(type) {
 		switch (type) {
-			case 'flip':
-				this.flip();
-				break;
-			case 'rotateLeft':
-				this.rotateLeft();
-				break;
-			case 'rotateRight':
-				this.rotateRight();
-				break;
-			case 'duplicate':
-				this.app.duplicatePolyomino(this);
-				break;
-			case 'trash':
-				this.app.deletePolyomino(this);
-				break;
+			case 'flip': this.flip(); break;
+			case 'rotateLeft': this.rotateLeft(); break;
+			case 'rotateRight': this.rotateRight(); break;
+			case 'duplicate': this.app.duplicatePolyomino(this); break;
+			case 'trash': this.app.deletePolyomino(this); break;
 		}
 		this.app.redraw();
 	};
diff --git a/2D/js/popup/grid.js b/2D/js/popup/grid.js
index cae135b..159f7ca 100644
--- a/2D/js/popup/grid.js
+++ b/2D/js/popup/grid.js
@@ -84,11 +84,8 @@ export function showGridPopup(toolbar) {
 						toolbar.closePopup('grid');
 						break;
 					case 5:
-						if (toolbar.mainApp.isBlackening) {
-							toolbar.mainApp.disableBlackening();
-						} else {
-							toolbar.mainApp.enableBlackening();
-						}
+						toolbar.mainApp.isBlackening = true;
+						toolbar.mainApp.canvas.style.cursor = 'url("../../assets/cursor_blackend.png"), auto';
 						toolbar.closePopup('grid');
 						break;
 				}
diff --git a/2D/js/popup/polyomino.js b/2D/js/popup/polyomino.js
index 983d864..0c47877 100644
--- a/2D/js/popup/polyomino.js
+++ b/2D/js/popup/polyomino.js
@@ -63,8 +63,8 @@ export function showPolyominoPopup(toolbar) {
 
 		const getRandomPosition = (max) => Math.floor(Math.random() * max);
 
-		const canvasPaddingX = getRandomPosition(window.innerWidth < 600 ? 300 : 1200) + (window.innerWidth < 600 ? 40 : 0);
-		const canvasPaddingY = getRandomPosition(170) + (window.innerHeight < 600 ? 0 : 40);
+		const canvasPaddingX = getRandomPosition(window.innerWidth < 600 ? 300 : 1200) + (window.innerWidth < 600 ? 0 : 40);
+		const canvasPaddingY = getRandomPosition(170) + (window.innerHeight < 600 ? 40 : 0);
 
 		polyominoes.forEach(({ polyomino, shape, shapeSize, y }) => {
 			const leftColumnRect = { x: 10, y: y - shapeSize / 2, width: 180, height: shapeSize + 20 };