A condenser design still needs the operating environment specified by its manufacturer. No wall exhaust hose does not mean the machine can be enclosed anywhere without airflow.
Understanding this situation
Room temperature, clearances and blocked openings can affect conditions around the appliance. A cupboard that feels hot or damp deserves attention rather than being treated as an unavoidable benefit of drying.
A useful next step
Check the exact installation guidance and keep permitted openings clear. Do not remove covers or improvise new vents in fixed cabinetry. Report unusual room moisture and drying changes together so the environment and appliance can be assessed appropriately.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.