CSS container nesting bug in CUSTOMIZE menu

Support Bug Reports
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1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

A mistake in your code makes your UI not understand the container height, and incorrectly vertically-shrink and truncate all the menus and input boxes and so on

Steps to Reproduce

Open CUSTOMIZE menu (e.g. to the Rules tab), put lots of rules in, on a big display - only 3 or so line show, wasting all the screen size

Expected Behavior

Should use the full display height, instead of blanking it all out

Screenshots / Screen Recordings

pic_2026-10-22_01.28.33_432.png
pic_2026-10-22_01.28.33_432.png812×2020 23.2 KB

Operating System

Windows 10/11

Version Information

Version: 3.24.12 (user setup)
VS Code Extension API: 1.128.0
Commit: 37b865941ccb31e2fc90c685157534efca87f960
Date: 2026-10-09T20:56:41.904Z
Layout: IDE
Build Type: Stable
Release Track: Default
Electron: 42.10.0
Chromium: 148.0.7778.280
Node.js: 24.18.1
V8: 14.8.178.38-electron.0
xterm.js: 6.1.0-beta.291
OS: Windows_NT x64 10.0.26100

Additional Information

You can tell this is a CSS error, because the input area’s resize control works fine for the height - but fails to auto-size on load properly. This is a classic CSS container-nesting mistake.

Does this stop you from using Cursor

No - Cursor works, but with this issue

6

Hey @Chris_Drake,

What you’re seeing is how the rule editor works today rather than the page losing track of its height: when you edit a User rule on the Customize page, it opens in a text box that starts at a fixed size of about four lines. It can be made taller by dragging, but it doesn’t grow to fit the rule’s text or the window.

A few ways to get more room in the meantime:

  1. Drag the handle in the bottom right corner of the box down as far as you like (it resets the next time you open the editor).
  2. Split a long rule into several smaller User rules with + New, so each one stays short and readable.
  3. For long instructions tied to a project, use a project rule instead: it’s a file in your project’s .cursor/rules folder and opens in the full editor. See the rules docs.

A larger editor for long rules is a fair ask, and I’ve passed it along as feedback!