[OPEN] Timer restarts: "Explorer job takes longer then specified"

Short description:
When sending out your explorer to find a treasure or an adventure, it takes him longer then specified to find it. When you monitor the progress you see that the progress bar restarts at some point. (or at least gets pushed back a bit)

Screenshot:
None available

Possible cause:
Unknown

Prevention:
Unknown

Workaround:
None available

Related:

• Timer restarts: "General travel time is longer then specified"
• Timer restarts: "Geologist job takes longer then specified"

Original thread(s): 1

Updates
[2013-08-18] Added

Still happening, sent explorer out on 16 hour map search at around 1am, so he'd be back before maintenance.
Just checked tonight at 7pm, and he still has 9 hours to go, which would make his total search time 27 hours+.
And of course, he'll return mid-maintenance, so in effect I lose his services for a day. :(