(bug) Images are cut at the bottom sometimes

[paynebc]

Describe the bug Every X runs, a test will fail because a snapshot is cut at the bottom. Rerunning the test will usually result in the correct snapshot again. The failing test is not always the same, it seems completely random

To Reproduce All snapshots are created using: cy.document().toMatchImageSnapshot();

Expected behavior Screenshots are always complete

Screenshots

Desktop (please complete the following information):

• MacOS Big Sur
• Cypress Version 5.5.0, but happed in earlier versions, too

Configuration

{
  "viewportWidth": 1920,
  "viewportHeight": 1080,
  "ignoreTestFiles": [
    "**/__snapshots__/*",
    "**/__image_snapshots__/*"
  ],
  "env": {
    "cypress-plugin-snapshots": {
      "autoCleanUp": false,
      "autopassNewSnapshots": true,
      "diffLines": 3,
      "excludeFields": [],
      "ignoreExtraArrayItems": false,
      "ignoreExtraFields": false,
      "normalizeJson": true,
      "prettier": true,
      "imageConfig": {
        "createDiffImage": true,
        "resizeDevicePixelRatio": true,
        "threshold": 0.004,
        "thresholdType": "percent"
      },
      "screenshotConfig": {
        "blackout": [],
        "capture": "fullPage",
        "clip": null,
        "disableTimersAndAnimations": true,
        "log": false,
        "scale": false,
        "timeout": 30000
      },
      "serverEnabled": true,
      "serverHost": "localhost",
      "serverPort": 2121,
      "updateSnapshots": false,
      "backgroundBlend": "difference"
    }
  }
}