switchToIframe() function is throwing an error starting from version 0.22.X (working fine on 0.20.5)

[ZeddEn]

Are you requesting a feature or reporting a bug?

Bug

What is the current behavior?

SwitchToIframe is triggering an error while it did not before on the previous versions. Was working fine on version 0.20.5 but the problem is detected started from the version 0.22.X.

Error message:
`2) Unhandled promise rejection:

       { type: 'uncaughtErrorOnPage',
  isTestCafeError: true,
  callsite:
  CallsiteRecord {
    filename: '/path/path/testTest.ts',
    lineNum: 99,
    callsiteFrameIdx: 6,
    stackFrames:
     [ [Object],
       [Object],
       [Object],
       [Object],
       [Object],
       [Object],
       [Object],
       CallSite {},
       [Object],
       [Object],
       [Object],
       CallSite {} ],
    isV8Frames: true },
  errStack: 'TypeError: i.resolversMap[t.id] is not a function\n    at t.<anonymous> (http://localhost:1337/hammerhead.js:2:18945)\n    at
  t.e.emit (http://localhost:1337/hammerhead.js:10:6592)\n    at t._onMessage (http://localhost:1337/hammerhead.js:3:26593)\n    at n
  (http://localhost:1337/hammerhead.js:10:9156)\n    at n (http://localhost:1337/hammerhead.js:3:27716)\n    at
  http://localhost:1337/hammerhead.js:3:19488',
  pageDestUrl: 'http://xxxxxxxx/agency.html?ric=xxxxxxxx' }

         Browser: Chrome 69.0.3497 / Windows 10.0.0`

And
TypeError: i.resolversMap[t.id] is not a function at t.<anonymous> (http://localhost:1337/hammerhead.js:2:18945) at t.e.emit (http://localhost:1337/hammerhead.js:10:6592) at t._onMessage (http://localhost:1337/hammerhead.js:3:26593) at n (http://localhost:1337/hammerhead.js:10:9156) at n (http://localhost:1337/hammerhead.js:3:27716) at http://localhost:1337/hammerhead.js:3:19488

What is the expected behavior?

SwitchtoIframe should work and switch to the designed one

How would you reproduce the current behavior (if this is a bug)?

Just call the switchToIframe function

Provide the test code and the tested page URL (if applicable)

await t
.switchToIframe('#sas_52199 iframe')
.expect(Selector('img:not([src*="xxxxxxxx.com"])').exists).ok()
.switchToMainWindow();

Specify your

• operating system: Windows 10
• testcafe version: 0.22.1-alpha.3, 0.22.0 and 0.21.1
• node.js version: v8.4.0

[lock]

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