Thanks for using Shortcoder and taking time to explain the issue.
This is a known issue/behavior when you use “shortcodes” in the post title.
It is because, shortcoder’s shortcodes will get the post title. When you use the shortcode inside post title, there is a loop.
So I would suggest not to use shortcoder’s shortcodes in post titles for now. But use it everywhere outside.
Since the fix is a bit complicated, I had to think about it. I’ll update you when there is an fix.