M38 / NGC 1912, the Starfish Cluster, doesn’t seem to be in the database. Typing “M 38” or “NGC 1912” returns M3.
Typing “M 38” may show you M3 first, but when you enter the last digit a new request is made and the results may take a while to appear, depending on the network conditions. Here it is just in case 
Open cluster M 38 - Open Cluster in Auriga Constellation
Thanks! I hadn’t noticed this behavior before, but I’ll be careful next time.