Script works differently on Linux

[smy]

So I've decided to buy Linux server. It has preinstalled xfce desktop with debian 8 distro. But I've got an issue with scripts. There scripts are written by me and they work on my Windows pc, but they don't work on Linux server.

For example: 

if(api.inventory.isItemSelected())
{
  if(api.inventory.interact("Use", "Item1"))
    new ConditionalSleep(MethodProvider.random(2000, 3000)) {
    @Override
      public boolean condition() throws InterruptedException {
      return api.widgets.getWidgetContainingText("looooooooooooool") != null;
    }
  }.sleep();
} else {
  if(api.inventory.interact("Use", "Item2"))
    new ConditionalSleep(MethodProvider.random(2000, 3000)) {
    @Override
      public boolean condition() throws InterruptedException {
      return api.inventory.isItemSelected();
    }
  }.sleep();
}

This code don't work, it's just click on Item2 and then clicks on inventory and does it repeatedly. That part of code works on windows pc.

Sometimes checking of object in area doesn't work.

First I though that Java versions are different, but on windows and linux they are the same.

Any suggestions ?

Edited October 13, 2018 by smy