Range.contains() returns true for positions not in range with editor.visibleRanges

[fengzhou-sg]

• VS Code Version:

  Version: 1.100.2 (Universal)
  Commit: 848b80aeb52026648a8ff9f7c45a9b0a80641e2e
  Date: 2025-05-14T21:47:40.416Z
  Electron: 34.5.1
  ElectronBuildId: 11369351
  Chromium: 132.0.6834.210
  Node.js: 20.19.0
  V8: 13.2.152.41-electron.0
  OS: Darwin arm64 24.5.0
  

• OS Version: MacOS Sequoia 15.5 (24F74)

Steps to Reproduce:

1. Noticed editor.visibleRanges.some((range) => (range.contains(position)) returns true where there is only 1 visibleRanges with value of [33:0 -> 67:1) and position is of line: 78, character: 35. In the debugger, range.end.isAfter(position) returns true, but so is position.isAfter(range.end) (the later is expected)
2. This seems to happen only with visibleRanges, tried to re-produce with following, but failed

    const range = new vscode.Range(33, 0, 67, 1)
    const position = new vscode.Position(78, 35)

    // returns false as expected
    console.log(range.contains(position))