hey, were there any validation email changes in 5.8?

hey, were there any validation email changes in 5.8? We have email "john.doe@example" in unit tests as failing validation, but after update from 5.7 to 5.8 it passes now
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wincent

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from the docs
 
Email Validation
Likelihood Of Impact: Very Low

The email validation rule now checks if the email is RFC5630 compliant, making the validation logic consistent with the logic used by SwiftMailer. In Laravel 5.7, the email rule only verified that the email was RFC822 compliant.

Therefore, when using Laravel 5.8, emails that were previously incorrectly considered invalid will now be considered valid (e.g hej@bär.se). Generally, this should be considered a bug fix; however, it is listed as a breaking change out of caution. Please let us know if you encounter any issues surrounding this change.
so yeah, probably a little less strict on validating now but might be a red herring

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