Reproduced with udisks 2.1.6-2 on current Debian sid, this time in Python, with any of direct D-Bus calls (both sync and async), libudisks (both sync and async) and gdbus. This tends to confirm that the bug is in UDisks2 itself.
Reproduced with udisks 2.1.6-2 on current Debian sid, this time in Python, with any of direct D-Bus calls (both sync and async), libudisks (both sync and async) and gdbus. This tends to confirm that the bug is in UDisks2 itself.