I have a bug related (probably) to this plugin.

Namely, the issue is that PVP on PVP zones does not work.
It is known, if I disable TruePVE then it works but on the whole map.
Previously it worked flawlessly, but now I have no idea what is going on.
This is the config with ZoneManager:

{
  "Autolight Options": {
    "Time to turn lights on": 18.0,
    "Time to turn lights off": 6.0,
    "Lights require fuel to activate automatically": true
  },
  "Notification Options": {
    "Display notifications via PopupNotifications": false,
    "Chat prefix": "[Zone Manager] :",
    "Chat color (hex)": "#d85540"
  },
  "NPC players can deal player damage in zones with PvpGod flag": false,
  "Allow decay damage in zones with Undestr flag": false,
  "Version": {
    "Major": 3,
    "Minor": 1,
    "Patch": 3
  }
}​

zone_data:

{
  "definitions": [
    {
      "Name": "Power Plant PVP",
      "Radius": 150.0,
      "Radiation": 0.0,
      "Comfort": 0.0,
      "Temperature": 0.0,
      "SafeZone": false,
      "Location": "926.6443 48.92 556.4802",
      "Size": "0 0 0",
      "Rotation": "0 0 0",
      "Id": "powerplant_1",
      "ParentID": null,
      "EnterMessage": "WARNING: You are now entering a PVP Zone",
      "LeaveMessage": "Returning to PVE Area",
      "Permission": null,
      "EjectSpawns": null,
      "Enabled": true,
      "Flags": "AutoLights"
    },
    {
      "Name": "Water Treatment Plant PVP",
      "Radius": 175.0,
      "Radiation": 0.0,
      "Comfort": 0.0,
      "Temperature": 0.0,
      "SafeZone": false,
      "Location": "20.32382 33.99 -46.37455",
      "Size": "0 0 0",
      "Rotation": "0 0 0",
      "Id": "water_treatment_plant_1",
      "ParentID": null,
      "EnterMessage": "WARNING: You are now entering a PVP Zone",
      "LeaveMessage": "Returning to PVE Area",
      "Permission": null,
      "EjectSpawns": null,
      "Enabled": true,
      "Flags": "AutoLights"
    },
    {
      "Name": "Train Yard PVP",
      "Radius": 165.0,
      "Radiation": 0.0,
      "Comfort": 0.0,
      "Temperature": 0.0,
      "SafeZone": false,
      "Location": "-482.154 45.92 -312.567",
      "Size": "0 0 0",
      "Rotation": "0 0 0",
      "Id": "trainyard_1",
      "ParentID": null,
      "EnterMessage": "WARNING: You are now entering a PVP Zone",
      "LeaveMessage": "Returning to PVE Area",
      "Permission": null,
      "EjectSpawns": null,
      "Enabled": true,
      "Flags": "AutoLights"
    }
  ]
}

And config:

server.globalchat "true"
server.pvp "true"
server.map "Procedural Map"
server.seed "45626230"
sleepers.on "true"
truth.enforce "true"
airdrop.min_players "1"
env.time "12"
env.timescale "0.0066666667"
crafting.instant "true"
crafting.instant_admins "true"
crafting.timescale "1"
falldamage.enabled "true"
player.backpackLockTime "0"
cheaters.log "true"
chat.serverlog "1"
server.netlog "1" 
server.saveinterval "300"
spawn.max_rate "1" 
spawn.max_density "1" 
autoupdate 
hackablelockedcrate.requiredhackseconds 300
rcon.web "1"
nav_enable "true"

The problem turned out to be in DynamicPVP, but I have already fixed it!