Recall that to be a known bug, no solution provided.
Suggest to use globally instead of the menu item (individually).

Thank you, can you elaborate your suggestion please? What does "use globally" mean? You mean set each article individually?

No, the document you referred to mentions 1. individually and 2. global.
You mentioned you opted for 1 indivually.
2. global is at the component level.

There is no change. The title links are still unclickable. I tried many different combinations. Does it work for you if you do it as the 2nd option?

Don't know, not using that functionality.

Making this change should solve your issue: staging...creativeprogramming:patch-3

I commented the '&& $params->get('access-view')' in layouts/joomla/content/blog_style_default_item_title.php

Yes it worked @creativeprogramming Grazie mille. So are you going to add the new parameters now? Joomla team rocks :-)

@hakanara no, I'm a Joomla user like you, not part of the Joomla team, I provided just a way for you to fix and some 'suggestion/inspiration' for the team to locate where the issue is, and the 'TODO:' i wrote in the code comments is part of my suggestion: let's hope someone in the team will take this and improve it (I didn't made a PR as I know that my time is not enough to test and use the proper code styling, I just want to help to fix issues, not to merge my code).

Note: there are also other views to fix with the same issue (that can be fixed in the same way) and I think adding a parameter is a good thing, anyway they may also simply remove the '$params->get('access-view')' check as it's unneeded for security as in the item view, like you stated, is instead used just to hide the 'fulltext' but not to prevent access to the URL, so having links to it should not be prevented

Actually there is already a parameter for this (Show title with links or something like this) So if the article is blocked by access restrictions, maybe there would be no need for hiding the link of the article. Let the developers discuss it.

@creativeprogramming You gave me an idea. I copied the modifed file to the html folder of the template and it works. Thank you. Hopefully, Joomla developers will respond to this :-)

Unfortunately that is not the way it works here. Without a PR with the suggested code change nothing is going to happen. You might be lucky and find someone that produces the PR. Doubt that very much because both solutions provided by @creativeprogramming are not of the quality to be applied to core.

Advice against using the modified code even as an template override. It is clear that you don't understand the meaning of the setting access-view. Removing that condition indeed gets you the linked title, only for more situations than you want. Obviously you need to restrict it to the situation at hand. Which is when you configured to show the teaser.

So, the condition would be:
if ($params->get('link_titles') && ($params->get('access-view') || $params->get('show_noauth', '0') == '1'))

@sovainfo , thank you very much. Your recommendation also worked for me. I managed to solve the situation with the template override. I know that the developers should agree on a solution and the code should be added to the package with a PR. I don't want to create many discussions, but your recommendation in the last message could be implemented to the core, right?

Created #8827
Please mention your test result using issues.joomla.org on #8827

With thanks to @creativeprogramming for pointing to the troubled code.

Suggest to close this issue, as there is a PR.

@sovainfo Thank you very much. Great team here.

I have tested all the combinations (authorized links = yes/no, clickable title links = yes/no, and acess rights = registered) and it worked as expected. So I close the issue now.