If you take a look at this question, you will see that the favicon for Linguistics.SE sometimes reads "LNG", and at other times reads "Lng". The same is true for at least the following sites:
- Linguistics - "LNG" vs "Lng"
- Japanese - "JP" vs "Jp"
- eBooks - "EB" vs "eB"
- Movies & TV - "MTV" vs "MATV" (not a capitalization issue, but still)
This issue does not exist for at least the following sites:
- Earth Science - "ES" everywhere
- Anime - "画" everywhere
- Music - "M" everywhere