PyDev hiding bottom line requiring scrolling (Reported by SANS)

## Where?
It is reported that the pydev console in the IBEX GUI does not display the bottom line (or otherwise itnereacts problematically with scrolling) when conected to the instrument PCs over VNC.

## How?
This issue was reported during the release feedback session by LAMOR (RD) and confirmed to also exist on SANS2D (LC).

## Reproducible?
Untested over VNC (sorry) not apparent on local instance.

### To Reproduce
May require further information from LAMOR or SANS2D instrument scientists

## Acceptance criteria
- [ ] The behaviour is confirmed to exist (if neccercery asking the instrument scientist to demonstrate the issue)
- [ ] It is understood how to reproduce the behaviour
- [ ] The bug is fixed so that behviour no longer occours

## How to Test
Instructions for reproducing the bug are followed and when the fix is applied the behaviour stops

_verbose instructions for reviewer to test changes
(**Add before making a PR**)_