WO-M and Data Collection were actually fixed to correct a long standing problem but I suspect you are seeing a ripple effect of this fix.  If a routing sequence is flagged Y for Standard Time, WO-F has always calculated a time based on the quantity of parts completed and the labor standard (time per part).  This is by design and WO-M and DC were recently fixed to work the same way.  However, this means that if your sequences are all coded for Standard Time and you aren't entering a quantity complete, you will see exactly what you are describing.
 
You need to use UT-K-B on the ROUTING, WOROUT and ROUTTEMP files and change the STD.TIME field from Y to N so you can enter actual times.