Readonly() behaves differently than Readonly::Scalar() with caller localization

[ahmogit]

The following behavior is observed with perl 5.20.0 and Readonly 2.00.

Defining a package scalar like so:

Readonly::Scalar our $myvar1 => 'The Readonly Value of myvar1';

behaves as expected when the caller uses "local($myvar1)" to localize its value. But defining a scalar like this:

Readonly             our $myvar2 => 'The Readonly Value of myvar2';

results in "attempt to modify read-only value" error at runtime when the caller does "local($myvar2)".

I read the doc concerning the differences between the two forms, but not clear why they should behave differently with localization. Is this a bug or user braindamage?

Minimal example attached.

example.txt