Problem when deleting a Wiki page
Hi Christoph,
Please note, that after any update/upgrade it's always recommended to 'Re-Index' before getting started with work (and I always 'clear cache' before indexing, as well).
My preferred way of finding this (though there are many):
Left Menu > Settings > Tiki Cache / System Admin. After clearing cache, there is a link in the box at the top to the 'Search' Feature, and at the top of the 'Search' page is the 're-index' button.
br,
Mike