Autocomplete randomly stops working after certain line

[longzheng]

What version of VS Code are you using?

v1.102.3

What version of Tailwind CSS IntelliSense are you using?

v0.14.26

What version of Tailwind CSS are you using?

v4.1.11

What package manager are you using?

npm

What operating system are you using?

Windows

Tailwind CSS Stylesheet (v4) or config file (v3)

@import 'tailwindcss';

VS Code settings

    "tailwindCSS.classFunctions": ["cva", "cn"],

Reproduction URL

I have not been able to replicate this outside of the private corporate project.

Describe your issue

Running into a weird issue where half the lines in the TSX file has Tailwind autocomplete, and the later half just doesn't work. For example at line 500 it works

But at line 529 it stops working.

Hover previews always work on any line

If I delete enough lines in the file then autocomplete seems to work on all lines, but it's not simply the number of lines because if I replace half the file with empty lines autocomplete works.

[longzheng]

Since I haven't been able to replicate this in a new project (since the issue seems to require all the project imports to trigger the problem), I wonder if there's any alternate debugging/verbose logging I can do to debug the issue.

I tried enabling verbose trace "tailwindcss-intellisense.trace.server": "verbose" and I can see that autocomplete returns no results for the buggy lines

[Trace - 5:44:30 AM] Sending request 'textDocument/completion - (284)'.
Params: {
    "textDocument": {
        "uri": "file:///workspaces/frontend/src/routes/%28authenticated%29/_authLayout/%24organizationId/invoices/%24invoiceId.tsx"
    },
    "position": {
        "line": 511,
        "character": 71
    },
    "context": {
        "triggerKind": 1
    }
}


[Trace - 5:44:30 AM] Received response 'textDocument/completion - (284)' in 23ms.
No result returned.

But it returns results for the earlier lines

[Trace - 5:45:44 AM] Sending request 'textDocument/completion - (311)'.
Params: {
    "textDocument": {
        "uri": "file:///workspaces/frontend/src/routes/%28authenticated%29/_authLayout/%24organizationId/invoices/%24invoiceId.tsx"
    },
    "position": {
        "line": 499,
        "character": 85
    },
    "context": {
        "triggerKind": 1
    }
}


[Trace - 5:45:44 AM] Received response 'textDocument/completion - (311)' in 88ms.
Result: {
    "isIncomplete": false,
    "items": [
        {
            "kind": 9,
            "data": {
                "_projectKey": "0",
                "_type": "variant"
            },
            "command": {
                "title": "",
                "command": "editor.action.triggerSuggest"
            },
            "sortText": "-00000000",
            "label": "*:",
            "detail": ":is(& > *)",
            "textEditText": "*:"
        },
        {
            "kind": 9,
            "data": {
                "_projectKey": "0",
                "_type": "variant"
            },
            "command": {
                "title": "",
                "command": "editor.action.triggerSuggest"
            },
            "sortText": "-00000001",
            "label": "**:",
            "detail": ":is(& *)",
            "textEditText": "**:"
        },
        {
            "kind": 9,
            "data": {
                "_projectKey": "0",
                "_type": "variant"
            },
            "sortText": "-00000002",
            "label": "not-[]:",
            "insertTextFormat": 2,
            "textEditText": "not-[${1}]:${0}"
        },

[pyshcoder]

Same problem with v0.14.26, PhpStorm Jetbrains Gateway in WSL2. Debugged with strace, it shows LSP infinitely sends data for previous lines.

For me, it stops working when i move cursor to some color classes (like dark:border-blue-500). When i disabled "colorDecorators" in config, problem seem to be solved, and intellisense works much faster.

[longzheng]

Since I can't successfully make a repro, I wonder if an extension dev could point me to how I can debug the intellisense server completion generation.