Manuel-J wrote
in the last days I have set up my first dokuwiki and I am pleased with this great piece of software. (Ubuntu 12.04 LTS package version = Rincewind - package pinning to 14.04 = Binky did not really work out because of quite a few dependencies.)
These versions are very very outdated. I would recommend to not rely on your package manager to install but instead manually install the newest release.
Manuel-J wrote
So I have tried the indexmenu plugin, but this breaks the code of the edit bar.
Most probably because your wiki is outdated.