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Polymer / polymer

Our original Web Component library.
https://polymer-library.polymer-project.org/
BSD 3-Clause "New" or "Revised" License
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Polymer release v1.12.0 might have introduced issues with observers #5563

Closed acory closed 5 years ago

acory commented 5 years ago

Happening on Chrome , maybe others. On property observer methods oldValue is equal to newValue when it shouldn't be. In other words oldValue doesn't reflect 'reality'.