Java Edition Classic server 1.9.1
From Minecraft Wiki
October 29, 2009
|Other editions with a version named 1.9.1|
- Trees won't grow unless
grow-treeis set to "true" in server.properties.
- Opping and/or de-opping a player will update their status immediately without them having to relog.
- "Creative mode client update and Server update" – The Word of Notch, October 29, 2009