Program: 58145
Project: 58145
Buggy source:
@EventHandler public void PlayerMove(PlayerMoveEvent event){
  try {
    Player player=event.getPlayer();
    Location from=event.getFrom();
    Location to=event.getTo();
    if ((from.getBlockX() != to.getBlockX()) || (from.getBlockZ() != to.getBlockZ())) {
      if (!isPlotWorld(player.getWorld())) {
        return;
      }
      if (enteredPlot(event.getFrom(),event.getTo())) {
        Plot plot=getCurrentPlot(event.getTo());
        if (plot.hasOwner()) {
          if (C.TITLE_ENTERED_PLOT.s().length() > 2) {
            String sTitleMain=C.TITLE_ENTERED_PLOT.s().replaceFirst("String_Node_Str",plot.getDisplayName());
            String sTitleSub=C.TITLE_ENTERED_PLOT_SUB.s().replaceFirst("String_Node_Str",getName(plot.owner));
            ChatColor sTitleMainColor=ChatColor.valueOf(C.TITLE_ENTERED_PLOT_COLOR.s());
            ChatColor sTitleSubColor=ChatColor.valueOf(C.TITLE_ENTERED_PLOT_SUB_COLOR.s());
            Title title=new Title(sTitleMain,sTitleSub,10,20,10);
            title.setTitleColor(sTitleMainColor);
            title.setSubtitleColor(sTitleSubColor);
            title.setTimingsToTicks();
            title.send(player);
          }
{
            PlayerEnterPlotEvent callEvent=new PlayerEnterPlotEvent(player,plot);
            Bukkit.getPluginManager().callEvent(callEvent);
          }
          boolean admin=player.hasPermission("String_Node_Str");
          PlayerFunctions.sendMessage(player,plot.settings.getJoinMessage());
          if (plot.deny_entry(player) && !admin) {
            event.setCancelled(true);
            return;
          }
          if (plot.settings.getRain()) {
            PlayerFunctions.togglePlotWeather(player,plot);
          }
          if (plot.settings.getChangeTime()) {
            PlayerFunctions.togglePlotTime(player,plot);
          }
        }
      }
 else       if (leftPlot(event.getFrom(),event.getTo())) {
        Plot plot=getCurrentPlot(event.getFrom());
{
          PlayerLeavePlotEvent callEvent=new PlayerLeavePlotEvent(player,plot);
          Bukkit.getPluginManager().callEvent(callEvent);
        }
        event.getPlayer().resetPlayerTime();
        event.getPlayer().resetPlayerWeather();
        PlayerFunctions.sendMessage(player,plot.settings.getLeaveMessage());
      }
    }
  }
 catch (  Exception e) {
  }
}

Fixed version (ground truth):
@EventHandler(priority=EventPriority.HIGHEST,ignoreCancelled=true) public void PlayerMove(PlayerMoveEvent event){
  try {
    Player player=event.getPlayer();
    Location from=event.getFrom();
    Location to=event.getTo();
    if ((from.getBlockX() != to.getBlockX()) || (from.getBlockZ() != to.getBlockZ())) {
      if (!isPlotWorld(player.getWorld())) {
        return;
      }
      if (enteredPlot(from,to)) {
        Plot plot=getCurrentPlot(event.getTo());
        if (plot.hasOwner()) {
          if (C.TITLE_ENTERED_PLOT.s().length() > 2) {
            String sTitleMain=C.TITLE_ENTERED_PLOT.s().replaceFirst("String_Node_Str",plot.getDisplayName());
            String sTitleSub=C.TITLE_ENTERED_PLOT_SUB.s().replaceFirst("String_Node_Str",getName(plot.owner));
            ChatColor sTitleMainColor=ChatColor.valueOf(C.TITLE_ENTERED_PLOT_COLOR.s());
            ChatColor sTitleSubColor=ChatColor.valueOf(C.TITLE_ENTERED_PLOT_SUB_COLOR.s());
            Title title=new Title(sTitleMain,sTitleSub,10,20,10);
            title.setTitleColor(sTitleMainColor);
            title.setSubtitleColor(sTitleSubColor);
            title.setTimingsToTicks();
            title.send(player);
          }
{
            PlayerEnterPlotEvent callEvent=new PlayerEnterPlotEvent(player,plot);
            Bukkit.getPluginManager().callEvent(callEvent);
          }
          boolean admin=player.hasPermission("String_Node_Str");
          PlayerFunctions.sendMessage(player,plot.settings.getJoinMessage());
          if (plot.deny_entry(player) && !admin) {
            event.setCancelled(true);
            return;
          }
          if (plot.settings.getRain()) {
            PlayerFunctions.togglePlotWeather(player,plot);
          }
          if (plot.settings.getChangeTime()) {
            PlayerFunctions.togglePlotTime(player,plot);
          }
        }
      }
 else       if (leftPlot(event.getFrom(),event.getTo())) {
        Plot plot=getCurrentPlot(event.getFrom());
{
          PlayerLeavePlotEvent callEvent=new PlayerLeavePlotEvent(player,plot);
          Bukkit.getPluginManager().callEvent(callEvent);
        }
        event.getPlayer().resetPlayerTime();
        event.getPlayer().resetPlayerWeather();
        PlayerFunctions.sendMessage(player,plot.settings.getLeaveMessage());
      }
    }
  }
 catch (  Exception e) {
  }
}