Timestamps without timezone which are written by pyarrow 0.14.0 cannot be read anymore as timestamps by earlier versions. The timestamp is read as an integer when reading in with pyarrow 0.13.0
Looking at the parquet schemas, it seems that the logical type cannot be understood by the older versions, see below.
pyarrow 0.13.0 parquet schema
pyarrow 0.14.0 parquet schema