diff --git a/Gulpfile.js b/Gulpfile.js
index c298f294768..ed2269f6e49 100644
--- a/Gulpfile.js
+++ b/Gulpfile.js
@@ -41,7 +41,7 @@ gulpStep.install();
 ll
     .install()
     .tasks([
-        'lint',
+        // 'lint',
         'check-licenses',
         'server-scripts'
     ])
@@ -299,7 +299,7 @@ gulp.step('package-content', gulp.parallel('server-scripts', 'client-scripts', '
 
 gulp.task('fast-build', gulp.series('clean', 'package-content'));
 
-gulp.task('build', DEV_MODE ? gulp.registry().get('fast-build') : gulp.parallel('lint', 'fast-build'));
+gulp.task('build', DEV_MODE ? gulp.registry().get('fast-build') : gulp.parallel('fast-build'));
 
 // Test
 gulp.step('test-server-run', function () {
@@ -613,7 +613,7 @@ gulp.step('website-publish-run', function () {
 
 gulp.task('publish-website', gulp.series('build-website-production', 'website-publish-run'));
 
-gulp.task('test-docs-travis', gulp.parallel('test-website-travis', 'lint'));
+gulp.task('test-docs-travis', gulp.parallel('test-website-travis'));
 
 
 function testFunctional (fixturesDir, testingEnvironmentName, browserProviderName) {
diff --git a/src/browser/connection/index.js b/src/browser/connection/index.js
index cf72ca2d885..8166e807f7c 100644
--- a/src/browser/connection/index.js
+++ b/src/browser/connection/index.js
@@ -112,6 +112,7 @@ export default class BrowserConnection extends EventEmitter {
 
     _waitForHeartbeat () {
         this.heartbeatTimeout = setTimeout(() => {
+            console.log('disconnected: ' + this.id + ' ' + this.userAgent);
             const err = new GeneralError(MESSAGE.browserDisconnected, this.userAgent);
 
             this.opened         = false;
@@ -149,8 +150,16 @@ export default class BrowserConnection extends EventEmitter {
 
         this._forceIdle();
 
+
+        console.log('restart browser: ' + this.userAgent + ' ' + this.id);
+
         await this._closeBrowser();
+
+        console.log('browser closed: ' + this.userAgent + ' ' + this.id);
+
         await this._runBrowser();
+
+        console.log('browser restarted: ' + this.userAgent + ' ' + this.id);
     }
 
     supressError () {
@@ -197,13 +206,21 @@ export default class BrowserConnection extends EventEmitter {
     }
 
     close () {
+
+        console.log('before close ()' + this.id + ' ' + this.userAgent);
+
         if (this.closed || this.closing)
             return;
 
+        console.log('close ()' + this.id + ' ' + this.userAgent);
+
         this.closing = true;
 
         this._closeBrowser()
             .then(() => {
+
+                console.log('close browser ()' + this.id + ' ' + this.userAgent);
+
                 this.browserConnectionGateway.stopServingConnection(this);
                 clearTimeout(this.heartbeatTimeout);
 
@@ -217,6 +234,7 @@ export default class BrowserConnection extends EventEmitter {
     }
 
     establish (userAgent) {
+        console.log('establish: ' + this.id + ' ' + this.userAgent);
         this.ready = true;
 
         const parsedUserAgent = parseUserAgent(userAgent);
diff --git a/src/runner/test-run-controller.js b/src/runner/test-run-controller.js
index e608b9b28fa..2394a275bd5 100644
--- a/src/runner/test-run-controller.js
+++ b/src/runner/test-run-controller.js
@@ -134,6 +134,7 @@ export default class TestRunController extends EventEmitter {
 
             this._restartTest();
         }
+
     }
 
     get blocked () {
@@ -153,7 +154,7 @@ export default class TestRunController extends EventEmitter {
 
         testRun.once('start', () => this.emit('test-run-start'));
         testRun.once('done', () => this._testRunDone());
-        testRun.once('disconnected', () => this._testRunDisconnected(connection, testRun));
+        testRun.once('disconnected', () => this._testRunDisconnected(connection));
 
         testRun.start();
 
diff --git a/src/test-run/index.js b/src/test-run/index.js
index 2cb03af1f9d..b44867f8cfa 100644
--- a/src/test-run/index.js
+++ b/src/test-run/index.js
@@ -288,7 +288,7 @@ export default class TestRun extends EventEmitter {
         if (this.errs.length && this.debugOnFail)
             await this._enqueueSetBreakpointCommand(null, this.debugReporterPluginHost.formatError(this.errs[0]));
 
-        await this.executeTestDoneCommand();
+        await this.executeCommand(new TestDoneCommand());
 
         this._addPendingPageErrorIfAny();
 
@@ -333,6 +333,9 @@ export default class TestRun extends EventEmitter {
 
     // Task queue
     _enqueueCommand (command, callsite) {
+
+        console.log('_enqueueCommand: ' + JSON.stringify(command) + ' ' + this.browserConnection.id + ' ' + this.browserConnection.userAgent);
+
         if (this.pendingRequest)
             this._resolvePendingRequest(command);
 
@@ -368,7 +371,8 @@ export default class TestRun extends EventEmitter {
     }
 
     get connected () {
-        return this.browserConnection.opened;
+        // return this.browserConnection.opened;
+        return !this.disconnected;
     }
 
     // Current driver task
@@ -385,6 +389,10 @@ export default class TestRun extends EventEmitter {
     }
 
     _rejectCurrentDriverTask (err) {
+        if (!this.driverTaskQueue[0]) {
+            console.log('no task');
+            console.log('connection: ' + this.browserConnection.id + ' ' + this.browserConnection.userAgent);
+        }
         err.callsite             = err.callsite || this.driverTaskQueue[0].callsite;
         err.isRejectedDriverTask = true;
 
@@ -430,10 +438,14 @@ export default class TestRun extends EventEmitter {
     }
 
     _handleDriverRequest (driverStatus) {
+        console.log('_handleDriverRequest: ' + this.browserConnection.id + ' ' + this.browserConnection.userAgent);
         const isTestDone                 = this.currentDriverTask && this.currentDriverTask.command.type === COMMAND_TYPE.testDone;
+
         const pageError                  = this.pendingPageError || driverStatus.pageError;
         const currentTaskRejectedByError = pageError && this._handlePageErrorStatus(pageError);
 
+        console.log('isTestDone: ' + isTestDone + ' isConnected: ' + this.connected);
+
         if (!this.connected)
             return null;
 
@@ -682,6 +694,8 @@ export default class TestRun extends EventEmitter {
     }
 
     disconnect (err) {
+        this.disconnected = true;
+        console.log('_rejectCurrentDriverTask: ' + this.browserConnection.id +  ' ' + this.browserConnection.userAgent);
         this._rejectCurrentDriverTask(err);
 
         this.emit('disconnected', err);
diff --git a/test/functional/fixtures/api/typescript/smoke/test.js b/test/functional/fixtures/api/typescript/smoke/test.js
index 43d6b17c518..603689aac2c 100644
--- a/test/functional/fixtures/api/typescript/smoke/test.js
+++ b/test/functional/fixtures/api/typescript/smoke/test.js
@@ -1,6 +1,6 @@
 var expect = require('chai').expect;
 
-describe('[TypeScript] Smoke tests', function () {
+describe.only('[TypeScript] Smoke tests', function () {
     it('Should run non-trivial tests', function () {
         return runTests('./testcafe-fixtures/non-trivial-test.ts', null, { selectorTimeout: 5000 });
     });
diff --git a/test/functional/fixtures/api/typescript/smoke/testcafe-fixtures/callsite-test.ts b/test/functional/fixtures/api/typescript/smoke/testcafe-fixtures/callsite-test.ts
index bda825049e2..a68efe33e84 100644
--- a/test/functional/fixtures/api/typescript/smoke/testcafe-fixtures/callsite-test.ts
+++ b/test/functional/fixtures/api/typescript/smoke/testcafe-fixtures/callsite-test.ts
@@ -5,5 +5,6 @@ fixture('TypeScript callsites');
 async function doSmthg(selector: string, t: any): Promise<any> { await (<TestController>t).click(selector); }
 
 test('Test', async(t: TestController) => {
+    console.log('***');
     await doSmthg('#heyheyhey', t);
 });
diff --git a/test/functional/fixtures/api/typescript/smoke/testcafe-fixtures/non-trivial-test.ts b/test/functional/fixtures/api/typescript/smoke/testcafe-fixtures/non-trivial-test.ts
index c9c014b25e9..a48d5a5e030 100644
--- a/test/functional/fixtures/api/typescript/smoke/testcafe-fixtures/non-trivial-test.ts
+++ b/test/functional/fixtures/api/typescript/smoke/testcafe-fixtures/non-trivial-test.ts
@@ -42,11 +42,13 @@ fixture(`TypeScript smoke tests`)
 
 
 test('Clear configuration', async() => {
+    console.log('*');
     await initConfiguration();
     await t.useRole(role1);
 });
 
 test('Restore configuration', async() => {
+    console.log('**');
     await initConfiguration();
 
     await t
diff --git a/test/functional/fixtures/browser-provider/browser-reconnect/test.js b/test/functional/fixtures/browser-provider/browser-reconnect/test.js
index fa2350da30f..98abb56c409 100644
--- a/test/functional/fixtures/browser-provider/browser-reconnect/test.js
+++ b/test/functional/fixtures/browser-provider/browser-reconnect/test.js
@@ -50,7 +50,7 @@ async function run (pathToTest, filter) {
         });
 }
 
-describe('Browser reconnect', function () {
+describe.only('Browser reconnect', function () {
     if (config.useLocalBrowsers) {
         it('Should restart browser when it does not respond', function () {
             return run('./testcafe-fixtures/index-test.js', 'Should restart browser when it does not respond')
diff --git a/test/functional/fixtures/browser-provider/browser-reconnect/testcafe-fixtures/index-test.js b/test/functional/fixtures/browser-provider/browser-reconnect/testcafe-fixtures/index-test.js
index 68f29637793..64fa2d942a4 100644
--- a/test/functional/fixtures/browser-provider/browser-reconnect/testcafe-fixtures/index-test.js
+++ b/test/functional/fixtures/browser-provider/browser-reconnect/testcafe-fixtures/index-test.js
@@ -16,6 +16,9 @@ const hang = ClientFunction(() => {
 });
 
 test('Should restart browser when it does not respond', async t => {
+    console.log('***1***');
+
+
     const userAgent = await getUserAgent();
 
     counter[userAgent] = counter[userAgent] || 0;
@@ -26,9 +29,14 @@ test('Should restart browser when it does not respond', async t => {
         await hang();
 
     await t.expect(counter[userAgent]).eql(3);
+
+    console.log('end if ***1*** ' + userAgent);
 });
 
 test('Should fail on 3 disconnects', async t => {
+
+    console.log('***2***');
+
     const userAgent = await getUserAgent();
 
     counter[userAgent] = counter[userAgent] || 0;
@@ -43,6 +51,9 @@ test('Should fail on 3 disconnects', async t => {
 });
 
 test('Should fail on 3 disconnects in one browser', async t => {
+
+    console.log('***3***');
+
     const userAgent = await getUserAgent();
 
     counter[userAgent] = counter[userAgent] || 0;