Repeater with pagination deletes annotations on other pages when used with BrushLabels

[Telcrome]

Describe the bug

Only the active page when clicking "Submit" retains its brush annotations, all other annotations are deleted. Happens only with mode="pagination".

To Reproduce

Create a project with config:

<View>
  <Repeater on="$document" indexFlag="{{idx}}" mode="pagination">
      <Image name="page_{{idx}}" value="$document[{{idx}}].page"/>
      <BrushLabels name="labels_{{idx}}" toName="page_{{idx}}">
        <Label value="Title" background="green" />
        <Label value="Date" background="blue" />
        <Label value="Author" background="yellow"/>
        <Label value="Organization" background="orange"/>
        <Label value="Amount" background="red"/>
      </BrushLabels>
  </Repeater>
</View>

with the demo data:

{
"document": [
    {
      "page": "https://htx-pub.s3.amazonaws.com/demo/images/demo_stock_purchase_agreement/0001.jpg"
    },
    {
      "page": "https://htx-pub.s3.amazonaws.com/demo/images/demo_stock_purchase_agreement/0002.jpg"
    },
    {
      "page": "https://htx-pub.s3.amazonaws.com/demo/images/demo_stock_purchase_agreement/0003.jpg"
    }
  ]
}

and create segmentations on at least two pages.

Expected behavior

Each page should be able to store independent brushlabels.

Environment (please complete the following information):

Docker image:

heartexlabs/label-studio:1.12.1 (afbe561a9dc7)

[jombooth]

Hi @Telcrome - we'll investigate this one! Repeater does have some known issues though, so we might propose an alternative labeling config that works better with BrushLabels.

[Telcrome]

@jombooth sounds great! Is there already a working alternative for groups of images where each image can have its own segmentation?