Cannot delete containers and what are toolbar groups?

While trying to make head or tail of the R8 toolbar customizations I stumbled
upon this probably minor bug:
1: Whenever I delete custom containers in this dialog …

_Containers

… they keep coming back with every restart.
Is that a feature?

2: While we are here, what’s the difference between

  • Containers
  • Toolbar Groups

MBP M1 Max
Sequoia 15.1
Rhino 8 Eval (8.12.24282.07002, 2024-10-08)

1 Like

It is a bug. RH-84019.