RSS Feed - first load not working

[JuraseQ]

Preconditions (*)

1. Magento 2.3.x & 2.3-develop
2. PHP 7.2.21 (i believe any other version too).

Steps to reproduce (*)

1. Enable standard RSS Feed module.

2. Enable RSS Feed for New Products and Special Products.
   

3. Proceed to domain.tld/rss
   

4. Choose any channel.(New product in my case)

5. We get an exception
   

6. Refresh of site will make RSS Feed work. The point is that it's not working every time after compile.
   

Expected result (*)

1. Module should output XML file

Actual result (*)

1 exception(s):
Exception #0 (Zend\Feed\Writer\Exception\InvalidArgumentException): Invalid parameter: parameter must be a non-empty string

What i found (*)

I debugged it and in Zend\Feed\Writer\AbstractFeed in method setTitle there is condition:
if ((empty($title) && ! is_numeric($title)) || ! is_string($title)) { throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string'); }

$title is an instance of 'Magento\Framework\Phrase' that is why it's throwing an exception.
When i changed the condition to:

if ((empty($title) && ! is_numeric($title)) || (! is_string($title) && strpos(get_class($title), 'Magento\Framework\Phrase') === false)) {

I tried this way just temporary for tests but it will require to modify data before it will reach Zend's library method.

[m2-assistant]

Hi @JuraseQ. Thank you for your report.
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[m2-assistant]

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[magento-engcom-team]

✅ Confirmed by @engcom-Charlie
Thank you for verifying the issue. Based on the provided information internal tickets MC-22027 were created

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Hi @eduard13. Thank you for working on this issue.
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[m2-assistant]

Hi @osrecio. Thank you for working on this issue.
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