Issue 31394 — Split bar for code editors in Write Script worksheet might be unreachable.
Status: Planned for resolution in 10.4.01
Solution available in patch(es): 10.3.02.010
In various editors the Write Script worksheet offers the option of splitting the code editor in two, with a split bar in between. It is possible that the split bar that separates the two windows, is so low that it is impossible to reach it and move it up. This could happen, for example, when you first use the IDE using a large screen and, in that session, have moved the split bar considerably downwards. If, later on, you would use a smaller screen, the split bar might be too low to reach it.
Make sure your split bars are not too far down when you close the IDE.