#+TBLNAME: tablename
| a | b | c | d |
| 1 | 2 | 3 | 4 |
| z | x | y | w |

#+TBLNAME: othertablename
| a | b | c | d |
| 4 | 3 | 2 | 1 |
| z | x | y | w |

I have the following code block

#+name: test
#+begin_src python :var table=tablename :exports results
  import numpy as np
  tab = np.array(table)
  return np.array([tab[:,1], tab[:,-1]]).T
#+end_src

#+RESULTS: test
| b | d |
| 2 | 4 |
| x | w |

If I call that function the result is correct

However using

#+CALL: test[:var table=othertablename]() :exports results

#+RESULTS:
| b | d |
| 3 | 1 |
| x | w |

#+CALL: test(table=othertablename) :exports results

#+RESULTS:
| b | d |
| 3 | 1 |
| x | w |