Created attachment 3310 [details] Patch file against openssh-8.0p1 sftp-client.c When the -R num_requests option is specified on the sftp command line, the actual maximum number of requests allowed is num_requests+1. This means that there is no way to configure a maximum of one outstanding request at a time which is useful in certain debugging scenarios.
Patch applied - thanks. This will be in the OpenSSH 8.4 release
Mass close of all bugs fixed in 8.4 release.