Is this a bug ？_getViewportInstances function

[wangning08115]

What feature or change would you like to see made?

i think the _getViewportInstances function has bug

Why should we prioritize this feature?

file:
D:\OhifViewerV3\extensions\cornerstone\src\Viewport\Overlays\CustomizableViewportOverlay.tsx

function:

`
function _getViewportInstances(viewportData) {
const imageIds = [];
if (viewportData.viewportType === Enums.ViewportType.STACK) {
imageIds.push(viewportData.data.imageIds[0]);
} else if (viewportData.viewportType === Enums.ViewportType.ORTHOGRAPHIC) {
const volumes = viewportData.data;
volumes.forEach(volume => {
if (!volume?.imageIds || volume.imageIds.length === 0) {
return;
}
imageIds.push(volume.imageIds[0]);
});
}
const instances = [];

imageIds.forEach(imageId => {
const instance = metaData.get('instance', imageId) || {};
instances.push(instance);
});
return instances;
}`

i want to know the line :
imageIds.push(viewportData.data.imageIds[0]);
is this a bug? it Always get the first image use 【imageIds[0])】
i think the _getViewportInstances function is get current Viewport all Instances , not the first image.
so is this a bug?

[sedghi]

it is not a bug, if we add all instances you will get all the same study information in here