I have found entries in the logbook to be unreliable. Sometimes they are correct, sometimes not, and sometimes missing altogether. This has been occurring for quite a while, and can occur even when Dev mode is off. Here is an example from my 1-hr+ flight yesterday from MDPC to MDJB. 1 takeoff & 1 landing (correct), but 0 hours flight-time. Who knew a Cessna 152 could fly so fast!! 
