diff --git a/ketcher-autotests/tests/Structure-Creating-&-Editing/Actions-With-Structures/Selection-Hover/simple-object-selection-and-hover.spec.ts b/ketcher-autotests/tests/Structure-Creating-&-Editing/Actions-With-Structures/Selection-Hover/simple-object-selection-and-hover.spec.ts
new file mode 100644
index 0000000000..577abafe2b
--- /dev/null
+++ b/ketcher-autotests/tests/Structure-Creating-&-Editing/Actions-With-Structures/Selection-Hover/simple-object-selection-and-hover.spec.ts
@@ -0,0 +1,45 @@
+import { Page, test } from '@playwright/test';
+import {
+  LeftPanelButton,
+  clickInTheMiddleOfTheScreen,
+  dragMouseTo,
+  getCoordinatesOfTheMiddleOfTheScreen,
+  selectLeftPanelButton,
+  takeEditorScreenshot,
+} from '@utils';
+
+test.describe('Selection and hover for simple objects', () => {
+  test.beforeEach(async ({ page }) => {
+    await page.goto('');
+  });
+  test.afterEach(async ({ page }) => {
+    await takeEditorScreenshot(page);
+  });
+
+  const ellipseWidth = 120;
+  const ellipseHeight = 100;
+
+  const setupEllipse = async (page: Page) => {
+    await selectLeftPanelButton(LeftPanelButton.ShapeEllipse, page);
+    const { x, y } = await getCoordinatesOfTheMiddleOfTheScreen(page);
+    const ellipseCoordinates = { x: x + ellipseWidth, y: y + ellipseHeight };
+    await clickInTheMiddleOfTheScreen(page);
+    await dragMouseTo(ellipseCoordinates.x, ellipseCoordinates.y, page);
+    return ellipseCoordinates;
+  };
+
+  test('Selection highlight appears immediately for simple objects', async ({
+    page,
+  }) => {
+    await setupEllipse(page);
+    await clickInTheMiddleOfTheScreen(page);
+  });
+
+  test('Hover highlight appears immediately for simple objects', async ({
+    page,
+  }) => {
+    const ellipseCoordinates = await setupEllipse(page);
+    await clickInTheMiddleOfTheScreen(page);
+    await page.mouse.move(ellipseCoordinates.x, ellipseCoordinates.y);
+  });
+});
diff --git a/ketcher-autotests/tests/Structure-Creating-&-Editing/Actions-With-Structures/Selection-Hover/simple-object-selection-and-hover.spec.ts-snapshots/Selection-and-hover-for-simple-objects-Hover-highlight-appears-immediately-for-simple-objects-1-chromium-linux.png b/ketcher-autotests/tests/Structure-Creating-&-Editing/Actions-With-Structures/Selection-Hover/simple-object-selection-and-hover.spec.ts-snapshots/Selection-and-hover-for-simple-objects-Hover-highlight-appears-immediately-for-simple-objects-1-chromium-linux.png
new file mode 100644
index 0000000000..393cb37742
Binary files /dev/null and b/ketcher-autotests/tests/Structure-Creating-&-Editing/Actions-With-Structures/Selection-Hover/simple-object-selection-and-hover.spec.ts-snapshots/Selection-and-hover-for-simple-objects-Hover-highlight-appears-immediately-for-simple-objects-1-chromium-linux.png differ
diff --git a/ketcher-autotests/tests/Structure-Creating-&-Editing/Actions-With-Structures/Selection-Hover/simple-object-selection-and-hover.spec.ts-snapshots/Selection-and-hover-for-simple-objects-Selection-highlight-appears-immediately-for-simple-objects-1-chromium-linux.png b/ketcher-autotests/tests/Structure-Creating-&-Editing/Actions-With-Structures/Selection-Hover/simple-object-selection-and-hover.spec.ts-snapshots/Selection-and-hover-for-simple-objects-Selection-highlight-appears-immediately-for-simple-objects-1-chromium-linux.png
new file mode 100644
index 0000000000..195600f6bb
Binary files /dev/null and b/ketcher-autotests/tests/Structure-Creating-&-Editing/Actions-With-Structures/Selection-Hover/simple-object-selection-and-hover.spec.ts-snapshots/Selection-and-hover-for-simple-objects-Selection-highlight-appears-immediately-for-simple-objects-1-chromium-linux.png differ
diff --git a/packages/ketcher-core/__tests__/application/render/restruct/reobject.test.ts b/packages/ketcher-core/__tests__/application/render/restruct/reobject.test.ts
new file mode 100644
index 0000000000..eb83b36c8d
--- /dev/null
+++ b/packages/ketcher-core/__tests__/application/render/restruct/reobject.test.ts
@@ -0,0 +1,37 @@
+import ReObject from 'application/render/restruct/reobject';
+
+it('should change selection style correctly for simple objects when selected', () => {
+  const reObject = new ReObject('simpleObject');
+  reObject.selected = true;
+  const options = {
+    hoverStyle: {
+      stroke: '#0097A8',
+      fill: '#CCFFDD',
+      'stroke-width': 20,
+    },
+  };
+  reObject.hovering = {
+    attr: jest.fn((style) =>
+      expect(style.fill).not.toEqual(options.hoverStyle.fill),
+    ),
+  };
+
+  reObject.changeSelectionStyle(options);
+});
+
+it('should change selection style correctly for other objects when selected', () => {
+  const reObject = new ReObject('frag');
+  reObject.selected = true;
+  const options = {
+    hoverStyle: {
+      fill: '#CCFFDD',
+    },
+  };
+  reObject.hovering = {
+    attr: jest.fn((style) =>
+      expect(style.fill).toEqual(options.hoverStyle.fill),
+    ),
+  };
+
+  reObject.changeSelectionStyle(options);
+});
diff --git a/packages/ketcher-core/__tests__/application/render/restruct/resimpleObject.test.ts b/packages/ketcher-core/__tests__/application/render/restruct/resimpleObject.test.ts
new file mode 100644
index 0000000000..1382b37f62
--- /dev/null
+++ b/packages/ketcher-core/__tests__/application/render/restruct/resimpleObject.test.ts
@@ -0,0 +1,71 @@
+import { ReStruct, Render } from 'application/render';
+import { RenderOptions } from 'application/render/render.types';
+import ReSimpleObject from 'application/render/restruct/resimpleObject';
+import { SimpleObjectMode, Struct, Vec2 } from 'domain/entities';
+
+const ellipse = {
+  mode: SimpleObjectMode.ellipse,
+  pos: [
+    new Vec2({
+      x: 5.025,
+      y: 9.600000000000001,
+      z: 0,
+    }),
+    new Vec2({
+      x: 10.05,
+      y: 12.200000000000001,
+      z: 0,
+    }),
+  ],
+};
+const rectangle = {
+  mode: SimpleObjectMode.ellipse,
+  pos: [
+    new Vec2({
+      x: 7.2250000000000005,
+      y: 10.3,
+      z: 0,
+    }),
+    new Vec2({
+      x: 11.100000000000001,
+      y: 12.825000000000001,
+      z: 0,
+    }),
+  ],
+};
+const line = {
+  mode: SimpleObjectMode.ellipse,
+  pos: [
+    new Vec2({
+      x: 7.7,
+      y: 9.125,
+      z: 0,
+    }),
+    new Vec2({
+      x: 11.3,
+      y: 12.4,
+      z: 0,
+    }),
+  ],
+};
+it('should get hover path and style for simple objects correctly', () => {
+  [ellipse, rectangle, line].forEach((simpleObject) => {
+    const reSimpleObject = new ReSimpleObject(simpleObject);
+    const option = { scale: 20, width: 100, height: 100 } as RenderOptions;
+    const render = new Render(document as unknown as HTMLElement, option);
+    const paths = reSimpleObject.hoverPath(render);
+    expect(
+      paths.filter((path) => path.path.attrs.fill === '#fff')?.length,
+    ).toBeGreaterThanOrEqual(1);
+  });
+});
+
+it('should get selection plate for simple objects correctly with selection points in a separated set', () => {
+  const reSimpleObject = new ReSimpleObject(ellipse);
+  const initialPathLength = reSimpleObject.visel.paths.length;
+  const option = { scale: 20, width: 100, height: 100 } as RenderOptions;
+  const render = new Render(document as unknown as HTMLElement, option);
+  const restruct = new ReStruct(new Struct(), render);
+  reSimpleObject.makeSelectionPlate(restruct, render.paper, render.options);
+  expect(initialPathLength + 1).toEqual(reSimpleObject.visel.paths.length);
+});
diff --git a/packages/ketcher-core/__tests__/application/render/restruct/restruct.test.ts b/packages/ketcher-core/__tests__/application/render/restruct/restruct.test.ts
new file mode 100644
index 0000000000..9b8e970e9f
--- /dev/null
+++ b/packages/ketcher-core/__tests__/application/render/restruct/restruct.test.ts
@@ -0,0 +1,34 @@
+import { ReSimpleObject, ReStruct, Render } from 'application/render';
+import { RenderOptions } from 'application/render/render.types';
+import { SimpleObjectMode, Struct, Vec2 } from 'domain/entities';
+
+describe('show selection', () => {
+  const ellipse = {
+    mode: SimpleObjectMode.ellipse,
+    pos: [
+      new Vec2({
+        x: 5.025,
+        y: 9.600000000000001,
+        z: 0,
+      }),
+      new Vec2({
+        x: 10.05,
+        y: 12.200000000000001,
+        z: 0,
+      }),
+    ],
+  };
+  const reSimpleObject = new ReSimpleObject(ellipse);
+  reSimpleObject.togglePoints = jest.fn();
+  const option = { scale: 20, width: 100, height: 100 } as RenderOptions;
+  const render = new Render(document as unknown as HTMLElement, option);
+  const restruct = new ReStruct(new Struct(), render);
+  it('should show selection simple objects correctly when selected', () => {
+    restruct.showItemSelection(reSimpleObject, true);
+    expect(reSimpleObject.togglePoints).toHaveBeenCalled();
+  });
+  it('should show selection simple objects correctly when unselected', () => {
+    restruct.showItemSelection(reSimpleObject, false);
+    expect(reSimpleObject.togglePoints).toHaveBeenCalled();
+  });
+});
diff --git a/packages/ketcher-core/src/application/render/restruct/resimpleObject.ts b/packages/ketcher-core/src/application/render/restruct/resimpleObject.ts
index 7b228f7e70..4e09fd1410 100644
--- a/packages/ketcher-core/src/application/render/restruct/resimpleObject.ts
+++ b/packages/ketcher-core/src/application/render/restruct/resimpleObject.ts
@@ -191,8 +191,12 @@ class ReSimpleObject extends ReObject {
     return refPoints;
   }
 
-  getHoverPathStyle(path: any, render: Render, type: boolean) {
-    if (type) {
+  getHoverPathStyle(
+    path: any,
+    render: Render,
+    isOuterShapeOfHoverPath: boolean,
+  ) {
+    if (isOuterShapeOfHoverPath) {
       return path.attr(render.options.hoverStyle);
     } else {
       return path.attr({ ...render.options.hoverStyle, fill: '#fff' });
diff --git a/packages/ketcher-core/src/application/render/restruct/restruct.ts b/packages/ketcher-core/src/application/render/restruct/restruct.ts
index 387ee80b95..4b25a61e1d 100644
--- a/packages/ketcher-core/src/application/render/restruct/restruct.ts
+++ b/packages/ketcher-core/src/application/render/restruct/restruct.ts
@@ -748,6 +748,10 @@ class ReStruct {
       if (item.selectionPlate) {
         item.selectionPlate.show();
         item.additionalInfo?.show();
+        item.cip?.rectangle.attr({
+          fill: '#7f7',
+          stroke: '#7f7',
+        });
         if (item.togglePoints) item.togglePoints(true);
       }
     } else if (exists && item.selectionPlate) {