Plants placed in flower pots in the stable 1.7 releases, as well as some of the 1.8 snapshots, will not be properly updated in the later snapshots which use blockstates, and any that use a damage value other than 0 will not render.
Plants that experience this bug:
|Dark Oak Sapling||6/5||flower_pot/5|
Plants that do not experience this bug:
- Place a plant that has a damage value in a flower pot in anything before 14w27a (I tested it in 14w21b)
- Exit world and update to 14w27b or later
- The flower pot will have disappeared.