Invalid MaxPhysicalWindowSize set by sshd

Prerequisites

• Write a descriptive title.
• Make sure you are able to repro it on the latest version
• Search the existing issues.

Steps to reproduce

• Install a brand new vanilla windows 2022 server without desktop (in my case in a proxmox VM with default settings, win2022 ISO downloaded from MS website as an evaluation copy).
• Install OpenSSH with sshd
• Connect to it from a remote client
• Check $Host.UI.RawUI.MaxPhysicalWindowSize

Expected behavior

$Host.UI.RawUI.MaxPhysicalWindowSize should be at least as big as the client's size.

Actual behavior

$Host.UI.RawUI.MaxPhysicalWindowSize is smaller than $Host.UI.RawUI.WindowSize, resulting in tools trying to restore termcaps to use the wrong values.

Example: open/close vim.

Error details

Initially posted on the docs repo MicrosoftDocs/Console-Docs#302, but as the bug impacts openssh, reposting it here as well.

Environment data

PS C:\Users\Administrator> $PSVersionTable

Name                           Value
----                           -----
PSVersion                      7.3.9
PSEdition                      Core
GitCommitId                    7.3.9
OS                             Microsoft Windows 10.0.20348
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Version

v9.4.0.0p1-Beta (OpenSSH_for_Windows_9.4, LibreSSL 3.7.3)

Visuals

Example:

• Check client terminal size
• Connect to the windows 2022 (no desktop) host
• Check $Host.UI.RawUI values - Notice MaxPhysicalWindowSize is lower than WindowSize
• Open/Close vim
• Check $Host.UI.RawUI again - Notice that vim restored the wrong value, resulting in a broken terminal.

$> stty size
50 145
$> ssh wintest1
PowerShell 7.3.9
PS C:\Users\Administrator> $Host.UI.RawUI

ForegroundColor       : Gray
BackgroundColor       : Black
CursorPosition        : 0,2
WindowPosition        : 0,0
CursorSize            : 25
BufferSize            : 145,50
WindowSize            : 145,50
MaxWindowSize         : 145,50
MaxPhysicalWindowSize : 1008,45
KeyAvailable          : True
WindowTitle           : Administrator: C:\Windows\system32\conhost.exe


PS C:\Users\Administrator> vim
PS C:\Users\Administrator> $Host.UI.RawUI

ForegroundColor       : Gray
BackgroundColor       : Black
CursorPosition        : 0,18
WindowPosition        : 0,0
CursorSize            : 25
BufferSize            : 145,45
WindowSize            : 145,45
MaxWindowSize         : 145,45
MaxPhysicalWindowSize : 1008,45
KeyAvailable          : True
WindowTitle           : Administrator: C:\Windows\system32\conhost.exe


PS C:\Users\Administrator>