Firefox Nightly v135.0a1 (2025-01-06) (64-bit) offers no way to switch containers

Setting is enabled:
image

I’ve renamed two of the default containers:

No icon for containers is displayed either before or after adding two tabs to container General:

When a tab in the “General” container is selected, the Container name shows in the address bar on the right, but it isn’t interactive, it is just a label:
image

How do I switch from one container to another?

TIA for your answers/assistance!

Oops, meant to add, if I go to Customize Toolbar to add Containers, it isn’t present in the possibilities:

Okay, I answered my own question. The native container functionality does, in fact, NOT provide any way to switch containers. However, if you add the Multi-account Containers add-on then the icon for switching between containers appears. It would seem that the native container functionality offers little unless you also install the add-on.