gotoline jumps from toprow to bottomrow

nano 8.6

Example 1:
  1. {toprow}{gotoline}--1{enter} # top row
  2. {toprow}{gotoline}--2{enter} # bottom row
  3. {toprow}{gotoline}--3{enter} # second row before bottom row
  4. {toprow}{gotoline}--4{enter} # third row before bottom row
  5. ... so forth ...

Example 2:
  1. {bottomrow}{gotoline}++1{enter} # bottom row
  2. {bottomrow}{gotoline}++2{enter} # bottom row
  3. {bottomrow}{gotoline}++3{enter} # bottom row
  4. ... so forth ...

{toprow}{up} and {bottomrow}{down} don't jump to the opposite side, so I
assume that's the right behaviour. Hence, Example 1 is buggy.