[Bug]: showPanel: false not working (v8.0.0-beta.0)

[aaronadamsCA]

Describe the bug

.storybook/manager.ts

import { addons } from "@storybook/manager-api";
import { create } from "@storybook/theming/create";

addons.setConfig({
  showPanel: false,
  theme: create({
    base: "dark",
  }),
});

After upgrading to v8.0.0-beta.0, the addons panel appears when I start Storybook, even though I've turned it off.

I still get a dark theme, which indicates manager.ts is still being read and understood; it's just the showPanel: false setting that isn't being respected.

To Reproduce

https://stackblitz.com/edit/github-izp6au-fo1t1m?file=.storybook%2Fmanager.ts

StackBlitz takes about a year to run Storybook, but the issue does reproduce. You'll have to open up the right pane wide enough to confirm.

System

No response

Additional context

No response

[vanessayuenn]

@aaronadamsCA thanks for trying out Storybook 8 beta! Indeed, starting from Storybook 8, showPanel is no longer a valid option. It has instead been split out to bottomPanelHeight: number and rightPanelWidth: number, where the numbers represents the size of the panel in pixels. Here is the relevant migration notes section, and the API docs.