I noticed this in publishing error logs:
1 | it | it | Rai | 20150707114638 |
1 | pt | pt | Amor | 20150707132356 |
I have no idea how source and target language can be the same.
Comment on March 3 2018: This may be resolved thanks to T138494. If it doesn't happen again till the end of April 2018, close it.