Criteria behavior inconsistent in advanced groups format and advanced expression format

[pingu8007]

I noticed that the issue described in #40 still happen when I configure custom criteria in advanced group format. If I compose the criteria in advanced expression format, the issue disappeared.

immich-20260320_152131.zip

This archive file contains 9 photos in 3 groups. When using groups format, only 2 of 3 are stacked. When using expression format, all photos are stacked.

{
  "mode": "advanced",
  "groups": [
    {
      "operator": "AND",
      "criteria": [
        {"key":"originalFileName","regex":{"key":"^PXL_\\d{8}_\\d{9}","index":0}},
        {"key":"localDateTime","delta":{"milliseconds":16000}}
      ]
    }, {
      "operator": "AND",
      "criteria": [
        {"key":"originalFileName","regex":{"key":"^DSC\\d+","index":0}},
        {"key":"localDateTime","delta":{"milliseconds":2500}}
      ]
    }
  ]
}

{
  "mode": "advanced",
  "expression": {
    "operator": "OR",
    "children": [
      {
        "operator": "AND",
        "children": [
          {"criteria":{"key":"originalFileName","regex":{"key":"^PXL_\\d{8}_\\d{9}","index":0}}},
          {"criteria":{"key":"localDateTime","delta":{"milliseconds":16000}}}
        ]
      }, {
        "operator": "AND",
        "children": [
          {"criteria":{"key":"originalFileName","regex":{"key":"^DSC\\d+","index":0}}},
          {"criteria":{"key":"localDateTime","delta":{"milliseconds":2500}}}
        ]
      }
    ]
  }
}