nested rars not unpacking

[nebakanezzer]

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NZBGet Version

v24.5-stable

Platform

Linux/Docker

Environment

debian 12 vm / proxmox
unrar-free 0.1.3
7zip 22.01
not running in docker

Current Behavior

whenever a file is successfully downloaded and unpacked (but has a rar within a rar) nzbget only unpacks the first rar set, marks it as complete/successful, and never unpacks the nested rar. this causes sister applications like the arrs to mark files as problematic for issues such as "sample" (because the actual file is still in another rar), "no file eligible for import", or an actual unpacking error

Expected Behavior

nzbget unpacks additional rar files (I would assume within a limit, to avoid zipbomb type attacks)

Steps To Reproduce

find nzb file with nested rars, add to download queue

Logs

ERROR Tue Dec 31 2024 04:09:53 Unpack for -redacted- failed
ERROR Tue Dec 31 2024 04:09:53 Could not move file /home/warmachine/sda1/nzb/completed/TV-Shows/-redacted-/_unpack/-redacted- to /home/warmachine/sda1/nzb/completed/TV-Shows/-redacted-/-redacted-: Directory not empty

Extra information

it looks like from the logs it cannot move the second unpack, because it would move it into the folder containing the first unpack (which is why it is saying the folder isnt empty)

[nebakanezzer]

poking around in extension manager, I discovered "extended unpack". I've enabled that and will test to see if this solves the issue.