This is a static dump of issues in the old "Flyspray" bugtracker for DokuWiki. Bugs and feature requests
are now tracked at the issue tracker at Github.
FS#863 small link bug (when using [[[xxx]]] ( [xxx] )
[[#[relations]]] doesn not render correctly ( [relations] )
the last ] is not part of the created link
In my opinion this isn't a bug. DokuWiki makes use of many "ordinary" characters for its syntax. There will always be combinations of those characters which give awkward results.
In this case, a link is defined by "[[" and "]]". DokuWiki has no way of telling which two of the three "]" you "intend" to be the closing pair for the link - it can only follow its syntax rules, which make the first two the closing delimiter.
A minor adjustment to your wiki text will get you the result you desire, e.g. [[ #[relations] ]].