If a player using PQL is offline and time has expired, it will still prevent another player from  taking over.  It gives the name of the player it's locked to, but in some cases, that player has been logged off for four or more hours.  I have a Sixty Barrel limit, so, It should only run a bit more than 2 hours, then release it soon after.

We have a small server, so took me a while since the first occurance and the second. First occurance was with HQM Quarry on day of the new update and again today. 

For now, I'm going to run the older Plugin.  Not sure if anyone else has noticed this yet or not?  I see as of today, we have 96 updates d/l on this plugin.

changes in version 1.0.20 are unrelated to the player disconnect feature. Last change to player disconnect feature is in rev 1.0.7. 
Latest test show function is working as expected.  Set the "Log to file" in config to get more details about activity.
can you send your config of the plugin so I can do more tests.

We are experiencing the same issue.  We have had to manually run the clear command to release the quarry/pumpjacks when players log off in order to release it.  Not a big deal, but figured I'd respond here.

After the Quarry stop,  If you use the /quarry command,  what does it say ?

Can you send the plugin config file