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Error output may not be obtained when executing a command with plink

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Hello,

For example, when you specify a path that does not exist with the ls command, plink will terminate without displaying the error output until the end.
Also, at this time, plink's exit code is returned as 0.

It doesn't always happen, but it has a high probability.

For details, please check the 「■Log when occurs」and「■Log when it does not occur」 below.

This problem seems to occur from plink version 0.77 or later.
It doesn't happen in 0.76.

Has anyone encountered the same phenomenon?

Thanks.

■plink version
plink: Release 0.80
Build platform: 64-bit x86 Windows
Compiler: clang 14.0.0 , emulating Visual Studio 2022 (17.2), _MSC_VER=1932, _MSC_FULL_VER=193231329
Source commit: c96fb0f10a4266513f8ebd3781550dac387d1dd1

■Running OS version
Windows Server 2019 Standard

■Connecting protocol
SSH

■Connecting server
I tried the following two types

・Red Hat Enterprise Linux release 8.1 (Ootpa)
・Red Hat Enterprise Linux release 9.1 (Plow)

■Log when occurs
D:\work\putty>plink.exe root@xxx.xxx.xxx.xxx -pw "xxxxx" -P 22 -v -no-antispoof "ls NotExistsDierectory"
	Looking up host "xxx.xxx.xxx.xxx" for SSH connection
	Connecting to xxx.xxx.xxx.xxx port 22
	We claim version: SSH-2.0-PuTTY_Release_0.80
	Connected to xxx.xxx.xxx.xxx
	Remote version: SSH-2.0-OpenSSH_8.7
	Using SSH protocol version 2
	No GSSAPI security context available
	Doing ECDH key exchange with curve Curve25519, using hash SHA-256 (unaccelerated)
	Server also has ecdsa-sha2-nistp256/rsa-sha2-512/rsa-sha2-256 host keys, but we don't know any of them
	Host key fingerprint is:
	ssh-ed25519 255 SHA256:wcNJXRAyMFZZHBaDsju5qovDY4VnvbJhqTFKZPHSFlI
	The host key is not cached for this server:
	  xxx.xxx.xxx.xxx (port 22)
	You have no guarantee that the server is the computer you
	think it is.
	The server's ssh-ed25519 key fingerprint is:
	  ssh-ed25519 255 SHA256:wcNJXRAyMFZZHBaDsju5qovDY4VnvbJhqTFKZPHSFlI
	If you trust this host, enter "y" to add the key to Plink's
	cache and carry on connecting.
	If you want to carry on connecting just once, without adding
	the key to the cache, enter "n".
	If you do not trust this host, press Return to abandon the
	connection.
	Store key in cache? (y/n, Return cancels connection, i for more info) n
	Initialised AES-256 SDCTR (AES-NI accelerated) outbound encryption
	Initialised HMAC-SHA-256 (unaccelerated) outbound MAC algorithm
	Initialised AES-256 SDCTR (AES-NI accelerated) inbound encryption
	Initialised HMAC-SHA-256 (unaccelerated) inbound MAC algorithm
	Using username "root".
	Using SSPI from SECUR32.DLL
	Trying gssapi-with-mic...
	Attempting GSSAPI authentication
	GSSAPI authentication request refused
	Sent password
	Access granted
	Opening main session channel
	Opened main channel
	Started a shell/command
	ls: c

D:\work\putty>echo %errorlevel%
	0

■Log when it does not occur
D:\work\putty>plink.exe root@xxx.xxx.xxx.xxx -pw xxxxx -P 22 -v -no-antispoof "Is Not ExistsDierectory"
	Looking up host "xxx.xxx.xxx.xxx" for SSH connection
	Connecting to xxx.xxx.xxx.xxx port 22
	Connected to xxx.xxx.xxx.xxx
	We claim version: SSH-2.0-PuTTY_Release_0.80
	Remote version: SSH-2.0-OpenSSH_8.7
	Using SSH protocol version 2
	No GSSAPI security context available
	Doing ECDH key exchange with curve Curve25519, using hash SHA-256 (unaccelerated)
	Server also has ecdsa-sha2-nistp256/rsa-sha2-512/rsa-sha2-256 host keys, but we don't know any of them
	Host key fingerprint is:
	ssh-ed25519 255 SHA256:wcNJXRAyMFZZHBaDsju5qovDY4VnvbJhqTFKZPHSFlI
	The host key is not cached for this server:
	  xxx.xxx.xxx.xxx (port 22)
	You have no guarantee that the server is the computer you
	think it is.
	The server's ssh-ed25519 key fingerprint is:
	  ssh-ed25519 255 SHA256:wcNJXRAyMFZZHBaDsju5qovDY4VnvbJhqTFKZPHSFlI
	If you trust this host, enter "y" to add the key to Plink's
	cache and carry on connecting.
	If you want to carry on connecting just once, without adding
	the key to the cache, enter "n".
	If you do not trust this host, press Return to abandon the
	connection.
	Store key in cache? (y/n, Return cancels connection, i for more info) n
	Initialised AES-256 SDCTR (AES-NI accelerated) outbound encryption
	Initialised HMAC-SHA-256 (unaccelerated) outbound MAC algorithm
	Initialised AES-256 SDCTR (AES-NI accelerated) inbound encryption
	Initialised HMAC-SHA-256 (unaccelerated) inbound MAC algorithm
	Using username "root".
	Using SSPI from SECUR32.DLL
	Trying gssapi-with-mic...
	Attempting GSSAPI authentication
	GSSAPI authentication request refused
	Sent password
	Access granted
	Opening main session channel
	Opened main channel
	Started a shell/command
	ls: cannot access 'NotExistsDierectory': No such file or directory
	Session sent command exit status 2

D:\work\putty>echo %errorlevel%
	2

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Error output may not be obtained when executing a command with plink ozawa01 jins <jinsozawa01@gmail.com> - 2024-02-13 21:45 -0800
  Re: Error output may not be obtained when executing a command with plink ozawa01 jins <jinsozawa01@gmail.com> - 2024-02-18 21:47 -0800

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