PS: No such problem for openssh-client 1:8.8p1-1 from Testing.
- Bug#1007822: "ssh -XAf localhost xeyes" uses 100% ... Harald Dunkel
- Bug#1007822: Acknowledgement ("ssh -XAf localhost ... Harald Dunkel
- Bug#1007822: "ssh -XAf localhost xeyes" uses ... Harald Dunkel
- Bug#1007822: "ssh -XAf localhost xeyes" uses ... Ralf Jung