The rack needs to sit in the configuration intended by the manufacturer. An accidentally uneven position can affect stability, clearance or how it engages its wash-water connection.
Understanding this situation
Do not assume asymmetry is permitted unless the manual specifically describes it. A basket that rolls into the cabinet may still be incorrectly supported or obstruct another component.
A useful next step
Refit or adjust only through the documented owner procedure. If a side will not lock normally, stop rather than forcing the door closed. Report the rack issue separately from a general complaint that the dishwasher no longer cleans.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.