Certain furnishings can no longer be obtained via quick exploration ventures.
Via the patch notes.
Quote:
Certain furnishings can no longer be obtained via quick exploration ventures.
This adjustment is intended to ensure balance in the distribution of materials and items related to high-level recipes introduced in patch 2.2.
I just want to say thank you SE. This will be useful for crafters and gardeners and still leaves plenty of rare non-furnishing items for players sending their retainers on quick ventures.