Not a bug; that's how it works.

spoo wrote:

Yes, it works like that. But it seems that this is a wrong behavior.

For example:
The template http://en.wikipedia.org/wiki/Template:UEFA_teams contain a
interwiki link to equivalent template in spanish wikipedia.
So each page calling this template contains an interwiki link to the spanish
template, whereas it has to point only to the corresponding page in the spanish
wikipedia.

In that case, you want the same issue as bug 835. Resolving as duplicate.

• This bug has been marked as a duplicate of 835 ***

aliter wrote:

Request 835 is about Categories. Would it be the same with interwiki?