Validation is retained when answer type is changed

[russellshome]

When an answer type is changed it should not keep any validation associated with the previous answer type.

Reproduction

Create a form with a Multiple choice answer.
Set the multiple choice answer to mandatory
Set the items to "choice 1" and "choice 2"
Submit and Save

Change the answer type of the Multi choice answer to Long answer
Submit and Save

Bug summary

Add the form to a page
View the page and attempt to submit a value of "test" as the Long answer

Outputs an error "Unexpected value: 'test'. Expected one of these: 'choice 1', 'choice 2'"

Specifics

v8.7.1 But I suspect this behaviour is the same for any version

Steps to reproduce

See above

Expected result

Any error message should relate to the answer type - not a previously set answer type.

Actual result

When multi choice is changed to Long answer then an error is output for valid content

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This item has been added to our backlog AB#11607

[nul800sebastiaan]

Thanks @russellshome, that's definitely a bug! We'll have to have a look at how we can fix that one.

[AndyButland]

Resolved in the linked PR and due in 8.7.2,