Disable Meta Box Resizing

WordPress 7.0 turned the meta box area at the bottom of the post editor into a collapsible, drag-to-resize panel. It is a nice addition for some, and a constant source of accidental drags and hidden fields for others. This plugin gives every user their own switch. Turn it on and the panel goes back to how it behaved before WordPress 7.0: no drag handle, no collapse toggle, the meta boxes simply sit below a full height canvas again. Because they sit below the canvas, they start off screen. A Meta boxes bar stays on the bottom edge of the editor to say they are there: press it to jump to them, press it again to come back to the content. It only scrolls out of the way once you have scrolled past it yourself. The setting is stored per user, so one editor can keep the resizable panel while another turns it off. Nothing changes for anyone who leaves the option alone. Where a user sets their own preference Two places, both writing the same value and both applying immediately without reloading the editor:

• Editor → Options (⋮) → Disable meta box resizing. Reachable in one click while writing.
• Editor → Options (⋮) → Preferences → Appearance → Meta boxes.

And one place outside the editor:

• Users → Profile → Editor meta boxes. Useful when an administrator sets it up on behalf of someone else.

What an administrator can configure Under Settings → Meta Box Resizing (or Network Admin → Settings → Meta Box Resizing on multisite):

• Default state — whether resizing starts out disabled for users who have not chosen for themselves. Users who did choose keep their own setting.
• Uninstall — whether to delete the plugin's settings and every stored user preference when the plugin is uninstalled. Off by default, so nothing is lost on a reinstall.
• Users list — adds a read only column to the users overview showing each user's setting, plus a dropdown to filter the list on it.

On multisite the settings live in the network admin, and each site's Settings menu links through to them. The plugin's row on the Plugins screen has a Settings link straight to that screen, for anyone who can open it. Good to know

• Development happens at github.com/acato-plugins/disable-meta-box-resizing. The uncompiled sources of the editor script and stylesheet ship in /src, next to the compiled files in /build.
• The plugin only touches the post editor. The site editor has no meta boxes and is left alone.
• One piece of user meta and one settings array. No front end code.
• On WordPress older than 7.0 the plugin deactivates itself and explains why, since there is no resizable panel there to switch off.

1.0.7

• Added a Playground blueprint, so the plugin directory can offer a Live Preview: it opens the editor with resizing switched off, a few demo meta boxes below the canvas and the site wide defaults already set. No change to the plugin itself.

1.0.6

• Added a Settings link to the plugin's row on the Plugins screen, so the settings screen is reachable without going looking for it in the menu. On multisite it leads to the network settings screen, and only shows for users who can actually open it.

1.0.5

• Fixed the meta boxes staying hidden, and the Meta boxes bar leading nowhere, for anyone who had never dragged the panel open before disabling resizing. WordPress backs the collapsed state with an !important rule, which the plugin's stylesheet did not outrank.

1.0.4

• Lowered the PHP requirement from 8.3 to 8.2, so the plugin installs on sites that are still on PHP 8.2. The code itself is unchanged; it never used anything PHP 8.3 introduced.

1.0.3

• Added the Patchstack Vulnerability Disclosure Program to the readme, so security issues have a clear reporting route.

1.0.2

• No changes, re-tagged for deployment purposes.

1.0.1

• Added a Meta boxes bar on the bottom edge of the editor when resizing is disabled, so the meta boxes below the canvas are no longer easy to miss. Press it to jump to them and again to come back.
• Fixes #2.

1.0.0

• Initial release.
• Per user preference to disable the resizable meta box panel.
• Available from the editor's Options menu, the Preferences modal and the user profile.
• Site wide settings for the default state, data removal on uninstall and the users list column.
• Filter the users overview by the preference.
• Deactivates itself with an explanation on WordPress older than 7.0.