Description of problem:
When connecting to a server which identifies as "9.26 FlowSsh: Bitvise SSH Server (WinSSHD) 9.26", the connection fails with "ssh_packet_read: internal error: buffer is read-only"

There is a PR with a fix at https://github.com/openssh-gsskex/openssh-gsskex/pull/19 that's been languishing for years at this point.

There's a partial port of this into the RHEL release, but it's not quite complete and thus fails

When does this behavior occur? Frequency? Repeatedly? At certain times?
Always

Version-Release number of selected component (if applicable):
RHEL 8.8 x64

Additional info:
https://www.bitvise.com/ssh-server-download