Cypress.io 3.1.3 breaks by legacy jQuery library

When testing a web page with old version jQuery, Cypress.io 3.1.3 breaks, and complain a TypeError as below.

The trackingstack is here.

cypress_runner.js:160760 TypeError: item.first is not a function
    at Object.unwrapFirst (http://localhost:9090/__cypress/runner/cypress_runner.js:62996:19)
    at http://localhost:9090/__cypress/runner/cypress_runner.js:58725:29
From previous event:
    at runCommand (http://localhost:9090/__cypress/runner/cypress_runner.js:58722:8)
    at next (http://localhost:9090/__cypress/runner/cypress_runner.js:58767:14)
From previous event:
    at http://localhost:9090/__cypress/runner/cypress_runner.js:58786:37
From previous event:
    at run (http://localhost:9090/__cypress/runner/cypress_runner.js:58784:15)
    at Object.cy.(anonymous function) [as visit] (http://localhost:9090/__cypress/runner/cypress_runner.js:59012:11)
    at Context.runnable.fn (http://localhost:9090/__cypress/runner/cypress_runner.js:59142:20)
    at callFn (http://localhost:9090/__cypress/runner/cypress_runner.js:27558:21)
    at Test.Runnable.run (http://localhost:9090/__cypress/runner/cypress_runner.js:27551:7)
    at http://localhost:9090/__cypress/runner/cypress_runner.js:62062:28
From previous event:
    at Object.onRunnableRun (http://localhost:9090/__cypress/runner/cypress_runner.js:62057:20)
    at $Cypress.action (http://localhost:9090/__cypress/runner/cypress_runner.js:57439:51)
    at Test.Runnable.run (http://localhost:9090/__cypress/runner/cypress_runner.js:61123:20)
    at Runner.runTest (http://localhost:9090/__cypress/runner/cypress_runner.js:28021:10)
    at http://localhost:9090/__cypress/runner/cypress_runner.js:28127:12
    at next (http://localhost:9090/__cypress/runner/cypress_runner.js:27941:14)
    at http://localhost:9090/__cypress/runner/cypress_runner.js:27951:7
    at next (http://localhost:9090/__cypress/runner/cypress_runner.js:27883:14)
    at http://localhost:9090/__cypress/runner/cypress_runner.js:27914:7
    at next (http://localhost:9090/__cypress/runner/cypress_runner.js:62027:16)
    at http://localhost:9090/__cypress/runner/cypress_runner.js:62039:11
From previous event:
    at onNext (http://localhost:9090/__cypress/runner/cypress_runner.js:62038:57)
    at done (http://localhost:9090/__cypress/runner/cypress_runner.js:27519:5)
    at http://localhost:9090/__cypress/runner/cypress_runner.js:27563:11
From previous event:
    at callFn (http://localhost:9090/__cypress/runner/cypress_runner.js:27562:10)
    at Hook.Runnable.run (http://localhost:9090/__cypress/runner/cypress_runner.js:27551:7)
    at http://localhost:9090/__cypress/runner/cypress_runner.js:62062:28
From previous event:
    at Object.onRunnableRun (http://localhost:9090/__cypress/runner/cypress_runner.js:62057:20)
    at $Cypress.action (http://localhost:9090/__cypress/runner/cypress_runner.js:57439:51)
    at Hook.Runnable.run (http://localhost:9090/__cypress/runner/cypress_runner.js:61123:20)
    at next (http://localhost:9090/__cypress/runner/cypress_runner.js:27897:10)
    at http://localhost:9090/__cypress/runner/cypress_runner.js:27919:5
    at timeslice (http://localhost:9090/__cypress/runner/cypress_runner.js:23160:27)
logError @ cypress_runner.js:160760
(anonymous) @ cypress_runner.js:160430
emitOne @ cypress_runner.js:126682
emit @ cypress_runner.js:126760
(anonymous) @ cypress_runner.js:116982
emitOne @ cypress_runner.js:126682
emit @ cypress_runner.js:126760
emit @ cypress_runner.js:117011
Test._this._onErrorClick @ cypress_runner.js:118787
(anonymous) @ cypress_runner.js:117133
executeAction @ cypress_runner.js:128987
res @ cypress_runner.js:128978
callCallback @ cypress_runner.js:133056
invokeGuardedCallbackDev @ cypress_runner.js:133106
invokeGuardedCallback @ cypress_runner.js:133159
invokeGuardedCallbackAndCatchFirstError @ cypress_runner.js:133173
executeDispatch @ cypress_runner.js:133504
executeDispatchesInOrder @ cypress_runner.js:133523
executeDispatchesAndRelease @ cypress_runner.js:133624
executeDispatchesAndReleaseTopLevel @ cypress_runner.js:133635
forEachAccumulated @ cypress_runner.js:133605
runEventsInBatch @ cypress_runner.js:133766
runExtractedEventsInBatch @ cypress_runner.js:133775
handleTopLevel @ cypress_runner.js:137768
batchedUpdates$1 @ cypress_runner.js:150409
batchedUpdates @ cypress_runner.js:135100
dispatchEvent @ cypress_runner.js:137847
interactiveUpdates$1 @ cypress_runner.js:150464
interactiveUpdates @ cypress_runner.js:135119
dispatchInteractiveEvent @ cypress_runner.js:137824

But, when I downgrade to version 3.1.2, and all tests work properly with no issues at all.

Could someone please help to have a look at this issue? Thanks

[farzadso]

Thanks @jennifer-shehane When will it be released?

[cypress-bot[bot]]

Released in 3.2.0.