Upon interacting with the finish editing button in the editing control panel, you were able to dupe items within a certain time frame.
The future of this plugin: I have been planning to re code the entirety of this plugin because of how poorly made PlayerWarps is. I have a better understanding of how to make object orientated plugins, and I will be re coding the PlayerWarps plugin so it's a lot faster when running certain functions. I plan the make all messages completely configurable (I don't know about the GUIs yet). If a bug happens to pop up before I'm done, I will try to patch it ASAP so no one has to deal with the bug.
Wall Composition - Re added cut code to make the wall composition feature more alive (you can have up to seven different blocks for the warp room and spawn room).
Wall Composition - Changed methods to the FastAsyncWorldEdit (FAWE) API methods, Make sure you have FastAsyncWorldEdit installed. This fixes a lot of lag that came off of the crappy old method.(Will change back if block duping starts happening at player warps (certain chunks screw up in certain areas).
If your console is spammed out when using this updates wall composition features, visit your spigot.yml file, then set "anti-xray: true" to "anti-xray: false". The plugin is made on 1.8.8 so this should work (if you don't have the option and you are on 1.8.8 +, tough luck, as stated. The plugin has only been tested on 1.8.8.
Duping - Patched some ways to dupe.
WarpCreate Control-Panel - Added the 2 features that were "Coming Soon". You can use these by going into edit mode, clicking on what one of the items named "Edit Warp / Spawn Room Walls", then to change the wall, composition, getting any block from the creative inventory that you would like to use, click on it then close the menu (If you have a lot of ram, and or space, then you shouldn't run into any issues. If you have a little amount of this stuff, you might encounter a little bit of lag).
Control Panel - Ability to start and stop editing warp when you want.
Messages - Changed some messages to be appropriate for the plugin.
Scoreboard - Changed to look better.
WarpCreation block - Duplication checks have been added.
WarpCreate and WarpCreation blocks - Added the ability to use a custom time.
Dependency checks - Added these checks so the plugin will disable if they aren't found.