Reproduction steps

1. Activate vim mode and sticky_scroll.
2. Use a file that has a nested header structure. For instance, this markdown content:

# Header level 1

## Header level 2

### Header level 3

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. 
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. 
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. 
Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

3. Move the cursor to the first line of content on level three ("Lorem ipsum ...")
4. Invoke scroll cursor top (z t)

Current vs. Expected behavior

Current behavior:

When pressing z t, the current line is scrolled to the top of the entire screen content, disregarding the sticky headers. This causes your cursor to disappear and can be disorienting. It also means that the line that you're on, which you probably meant to use as a reference, is hidden by the sticky header.

Before pressing:

After:

The relative line numbers in this screenie shows you exactly what's happened: I can move my cursor up 2 lines to reach the previous header, or down 3 lines to reach the first visible line of text.

Expected:

The z t action should take sticky headers into consideration, such that the line is scrolled to the top of the "effective" text area. It'd look like this:

Workaround and additional bug?

Moving your cursor does seem to expose it in most cases, but not always. For instance, if you place the cursor on the last line of the text ("Excepteur ...") and invoke the command, then the text content and the current level header disappears completely:

Before:

After:

Notice that the "Header level 3" has also been swallowed, although the breadcrumbs indicate that it should be there.

Now if I move my cursor once to the right (such that it moves, which appears to cause a recalculation), I get this:

And only when I move it another step, is the current line finally revealed.

Zed version and system specs

Zed: v0.223.2+preview.146.16e7dc6cfdc74af3d80fab913a694b757c3a3349 (Zed Preview)
OS: macOS 26.2
Memory: 48 GiB
Architecture: aarch64

Attach Zed log file

Relevant Zed settings

{
  "sticky_scroll": {
    "enabled": true,
  },
  "vim_mode": true,
}

Relevant Keymap

(for AI issues) Model provider details

No response

If you are using WSL on Windows, what flavor of Linux are you using?

None