While reviewing two of my questions I noticed the following:
- Penalty-enhanced approach to float placement
- Penalty-enhanced approach to float placement in LaTeX3
Despite being very similar questions and having very similar tags, the first has a tag listed in the page title, while the second does not. Furthermore, the tag that is listed is not the first tag on the question.
My first theory was that the second question had a longer title and the tag was not included to satisfy some target length for the page title. But I've found shorter question titles that did not have a tag in the page title (natbib package error) and longer question titles that did have a tag in the page title (Can I install TeXLive on Windows 7 just by copy/paste (without affecting the system/registry)?).
What determines the tags (if any) listed in the page title? Is there some rhyme or reason behind this decision that I've missed?