BetterRTP can sometimes teleport into the air

[Mario359]

Plugin Version: 2.10.1

Issue Type: With a lot of teleportation attempts on dimensions (Nether or Ender) it sometimes happens that BetterRTP places the player in the air making him fall on the ground, in the void or in the lava.

Context: I use the commands /rtp world world_nether or /rtp player world_nether to teleport my players The map is generated entirely within the teleport distance of BetterRTP I use Minecraft 1.15.2 with Paper 347

Configuration:

Language-File: fr.yml
Settings:
  RespectWorldGuard: false
  RespectGriefPrevention: false
  RespectSavageFactions: false
  MinRadius: 25
  MaxAttempts: 15
  Cooldown:
    Enabled: true
    Time: 900
  Delay:
    CancelOnDamage: true
    Time: 1
    CancelOnMove: true
  DisableUpdater: false
Default:
  UseWorldBorder: false
  Biomes: []
  MaxRadius: 10000
  MinRadius: 512
  CenterX: 0
  CenterZ: 0
BlacklistedBlocks:
- stationary_water
- stationary_lava
- water
- lava
- cactus
- leaves
- leaves_2
- air
- bedrock
- void
- void_air
- fire
- chorus_plant
- chorus_flower
DisabledWorlds: []
CustomWorlds:
- world:
    UseWorldBorder: false
    MaxRadius: 10000
    MinRadius: 512
    CenterX: 0
    CenterZ: 0
- world_nether:
    MaxRadius: 10000
    MinRadius: 1000
    CenterX: 0
    CenterZ: 0
- world_the_end:
    MaxRadius: 10000
    MinRadius: 1256
    CenterX: 0
    CenterZ: 0
Override:
  world_nether: world_nether

Note: Sometimes BetterRTP teleports in a single block of height, it's not annoying in 1.15 but it can be in 1.8

[SuperRonanCraft]

In recent releases of Spigot, there was some specific code to finding the top block of a chunk moving from 1.15.1 to 1.15.2, this was added in later versions of 1.15.2, please make sure you have the latest version of each major release. I will have to close this issue, but if this issue continues, please feel free to reopen it.