Setting an Input value back to its original value will prevent any further changes to the changeset

[ultish]

Version

ember-changeset: 3.8.2
ember-cli: 3.16.2

Test Case

https://ember-twiddle.com/2131e7dac897f223941de3c49cb82ee5?openFiles=twiddle%5C.json%2C

Steps to reproduce

1. In the input box, add some text after the word "Tom" eg "Tom1"
2. IsPristine will now be false
3. Delete the additional text you made so the input reverts back to "Tom"
4. isPristine will now be true again
5. Try to type in a value in the input box and it won't do anything anymore

Expected Behavior

Expect changeset to set the value even after it reverted itself back to a pristine state

Actual Behavior

The changeset doesn't set any new value after returning to a pristine state

If I rollback the changeset then I can type into the Input again. If you make the Input into "Tom" again, it'll get stuck again until a rollback

[snewcomer]

👋 Hi! Can you try 3.20?

#519 (comment)

[ultish]

Hi @snewcomer
Thank you for the tip, that has indeed fixed it 👍

Will ember 3.20+ be required going forward?

[snewcomer]

Sadly yes. Some dev only instrumentation that was removed causes this issue (not prod though).

emberjs/ember.js#18961