I'm now using qemu-system-hppa version 5.2.50, and I can put "-serial mon: stdio" before or after "-serial telnet :: 4441, server" without a problem.
#qemu-system-hppa --version QEMU emulator version 5.2.50 (v5.2.0-1300-g0e32462630) Copyright (c) 2003-2020 Fabrice Bellard and the QEMU Project developers
For me, no more bug.
I'm now using qemu-system-hppa version 5.2.50, and I can put "-serial mon: stdio" before or after "-serial telnet :: 4441, server" without a problem.
#qemu-system-hppa --version 1300-g0e3246263 0)
QEMU emulator version 5.2.50 (v5.2.0-
Copyright (c) 2003-2020 Fabrice Bellard and the QEMU Project developers
For me, no more bug.