I managed to overcome the loss of the "Switch Profile" button by adding the "-p" argument to my Firefox shortcut path, which then brings up a window to choose the profile. But it's unintuitive, ugly and discouraging to use this way. It works, but it'...
In the recent update vs 133.0, it seems to me that the "Switch Profile" button was lost, even with the configuration: browser.profiles.enabled as true.What happened? Did they regress instead of improving?