Eric K wrote:
It must be something else because another template also doesnt work and in that too:
- I'm copy pasting the exact code from the template that is already working in Wikipedia
- its not using any CSS as well.
I'm going to try step by step trouble shooting to see whats going on.
As Rob Church told you, install tidy. When tidy is enabled MediaWiki leaves some conversion to tidy, which allows tags open on one template to be closed on another. If not using tidy, MediaWiki will close the tag at the end of the first template.