Disabled input still vissible on list

Perform the following steps:

  1. switch on Arcam SA30 with firmware version:

Version – v1.72
Network – v1206
ARC – V1.7
ARC Rx – V1.0.0

  1. go to “menu / system settings / enable input” and disable everything except: CD, STB, NET
  2. go out of menu and iterate on all available input sources - it will be as expected: CD, STB, NET
  3. power off Arcam SA30 using gray power switch on amplifier
  4. turn on Arcam SA30 again and iterate on all enabled input sources

Actual result
Available inputs: CD, STB, NET, ARC

Expected result
Available inputs: CD, STB, NET