deconz-rest-plugin: `--dev` flag regression past 2.05.77 for `deCONZ`

Describe the bug

deCONZ no longer connects to the raspbee. I’d like to update my deCONZ package due to the age of the package for new features and security reasons.

Steps to reproduce the behavior

Any deCONZ version above 2.05.77 fails to connect to the device over an SSH tunnelled virtual serial device

Expected behavior

No regression from 2.05.78 onward.

Screenshots

Environment

deCONZ/Phoscon versions as per above

• Host system: x86 VM
• Running method: Rpi 0W with a RaspBee II (I also have a RaspBee that I can test with as well)
• Firmware version: 26690700
• deCONZ version: 2.05.77 tested on 2.11.05-debian-buster-stable and 2.12.00-ubuntu-xenial-beta
• Device: RaspBee I/RaspBee II
• Do you use an USB extension cable: No
• Is there any other USB or serial devices connected to the host system? If so: Which? No

deCONZ Logs

2.05.77 has: 15:52:21:724 COM: --dev: /home/redm/ttyAMA0 (RaspBee) Where as any version onward does not have this line. I am running deCONZ via /usr/bin/deCONZ --dev=/home/redm/ttyAMA0 --upnp=0 on any version I test.

Additional context

While the serial redirect may seem odd, it worked in the past and was the entire reason I wanted a deCONZ set up. The reason for doing it this way is that it makes integration with my VM cluster much easier and deCONZ in its entirety is backed up nightly and I don’t have to worry about the rpi dying or the SD card in the pi dying.