A browser CHM13 users was confused by CHM13_T0119487 RRM2
They didn't understand why the start codon was missing. It has
Status of CDS start annotation cmpl
Status of CDS end annotation cmpl
transcript type: nonsense_mediated_decay
The source gencode transcript has cds_start_NF mRNA_start_NF
indicating it is incomplete.
Also, this is colored as a non-coding gene, which GENCODE tracks condider it coding