Social Share buttons are only available for registered users

[rich20]

Describe the bug
https://www.kunena.org/forum/general-questions-and-how-tos/153355-social-share-buttons

To Reproduce
Steps to reproduce the behavior:

1. Choose in the template setting Display Social Share = Yes
2. Visit your Forum as guest

Expected behavior
Social Share should be available

Actual result
Guests can't see the buttons

Additional context
But when we make Social Share available to guests, then makes the profile setting "Social Share - Yes or No" no sense.
As soon as a member log out, the Social Share buttons are back, also if in their profile is set "Social Share - No".
My opinion, it is the task of the website operator to inform his users about privacy (GDPR) and to define if there are Social Share on his website or not.

System information (please complete the following information)

Joomla version: 3.8.10 and 3.8.11-dev
Kunena version: 5.1.2-dev
Php version: 7.0.25 and 7.2.1
Database version:

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]