Javascript, and default=hidden
There is a JavaScript bound to this Template. While using JavaScript without a server supported fallback (in case a clients cannot, or refuses to, execute JavaScript code) is generally a bad idea, and creating unneccessary barriers to access content on the www, at least the default (without JavaScript running) should be to show, not hide, the information. If JavaScript is running, it can easily hide the information first thing, while the average user has no means to show it on his or her own. --Purodha Blissenbach 08:35, 10 August 2008 (UTC)
Your expression "this template" is not clear enough because there's no link to it (or to the page using it).
Nobody can answer you or solve any problem you encountered.
Next time post a relevant link: if you don't know which template (or script or CSS stylesheet) generates the problem, post at least a link to the page where it is used and cause problems.
But as this problem seems specific to your browser, please specify also which browser type and version you use, and your language (this may also be a CSS problem, or insufficiently selective CSS selectors in scripts which cause problems only in some pages or in a specific language).
Did you try changing the language using the language selector to see if this causes the same problems (choose a major language such as English which is more tested). Also try clearing your browser cache (or press CTRL+SHIFT+R or CTRL+SHIFT+F5 in order to refresh not just the page itself, but also all its linked or dependant scripts, stylesheets and images that start being loaded in parallel before the pageload completes).
@Purodha: Thanks for your report. I've fixed the issue in revision 7093059. It should now render as "expanded" by default when accessing without JavaScript. This is our default usually, but for some reason wasn't the case for "Template:Identical".
@Verdy_p: Purodha's expression "this template" is perfectly understandable given that this is a thread posted on the "Template talk:Identical" discussion board. Perhaps you were using Special:NewMessages to read this message and didn't notice the subject on the left side? (It's not the best interface, but it is what it is).