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I have a Visualforce Lightning Out page that's rendering some <lightning:input type="date"> elements. Since the Winter '19 release in the dev sandbox I'm working in, whenever I select a date from the calendar that appears when focusing the element, I get the following error:

Uncaught TypeError: Cannot read property '$$OwnerKey$$' of null throws at https://my--namespace--c.cs53.visual.force.com/auraFW/javascript/DKtn8n91I9aoLMj6o4CurQ/aura_prod.js:2:1559

Cannot read property '$$OwnerKey$$'

Has anyone else seen this behavior? Is it a Winter '19 bug? Is there any corresponding Known Issue?

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  • Yes,We also got same error on Lightning date field..Reported to salesforce.
    – Nikhil Singhal
    Commented Sep 13, 2018 at 21:40
  • My custom datepicker does not do this - here: github.com/rapsacnz/DatePicker
    – Caspar Harmer
    Commented Sep 13, 2018 at 22:31
  • I just started receiving this on a VF page with a Lightning component in a Winter '19 environment, but it only throws this error on Android phones. Desktop and iOS (iphone and ipad) running same code does not throw errors.
    – Mike Paisner
    Commented Sep 14, 2018 at 22:49

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Yes, this was a Winter '19 bug, which has since been fixed in the Winter '19 Patch 7.0.

The issue previously could be reproduced using the following steps:

  1. Create a lightning:recordForm component or a lightning:input component for entering a date.
  2. Edit the record, and select a new date.

These steps would result in the following error:

This page has an error. You might just need to refresh it. First, would you give us some details? (We're reporting this as error ID: XXXXXXXXXX)

[Cannot read property '$$OwnerKey$$' of null]

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