Redisplay of Workflow Variables after an Exception

When a workflow activity throws an exception, all the visible workflow variables are re-displayed as their Internal Names NOT The 'Display Name'.

So for example I have two visible boolean variables:-

role_safety - Display Name 'Safety Lead'
role_proj_mgr - Display Name - 'Project Manager'

So the user sees:-
'Safety Lead' and
'Project Manager' in the activity

The user clicks 'Complete Task' - the transition code checks if they are both 'false', if they are then it throws an exception:-

The user now sees :-
'role_safety' instead of 'Safety Lead'
and
'role_proj_mgr' instead of 'Project Manager'

PTC have had this 4 months with no resolution.

Anyone out there able to help ?