Cypress test. Issue 2487. (#2571)

Co-authored-by: Kruchinin <dmitryx.kruchinin@intel.com>

tests/cypress/integration/actions_tasks_objects/issue_2487_extra_instances_canvas_grouping.js

@@ -0,0 +1,30 @@
+// Copyright (C) 2020 Intel Corporation
+//
+// SPDX-License-Identifier: MIT
+
+/// <reference types="cypress" />
+
+import { taskName } from '../../support/const';
+
+context('Extra instances on canvas when grouping.', () => {
+    const issueId = '2487';
+
+    before(() => {
+        cy.openTaskJob(taskName);
+    });
+
+    describe(`Testing issue "${issueId}"`, () => {
+        it('Go to grouping mode.', () => {
+            cy.changeAppearance('Group');
+        });
+
+        it('Start drawing a group region and press "G". Group region not exist', () => {
+            cy.get('.cvat-group-control').click();
+            cy.get('.cvat-canvas-container')
+                .trigger('mousedown', 250, 250, { button: 0 })
+                .trigger('mousemove', 500, 500);
+            cy.get('body').type('g');
+            cy.get('.cvat_canvas_shape_grouping').should('not.exist');
+        });
+    });
+});