sftp / scp regression from 8.6.0.0 to 8.9.1.0

[tdesaules]

Hi guys !

I just move my openssh server version from 8.6.0.0 to 8.9.1.0
I can't see any issue on "pure" ssh usage but I get a "lost connection" from the client with an "unknow error" when I try to use scp or sftp

I didn't see an issue about, just to confirm before create one with more debug info.

I did the test from a Windows 10 client with the same openssh version.
The server is a Windows Server 2016 (1607 buid 14393.5356)
I use a custom port (10022) and use ssh keys to authenticate.

have a nice day

[maertendMSFT]

Moving this to an issue thread instead of a discussion: #2006