Why is deleting one file in kartik-v-fileinput deleting all other files?

Question

Yii

I am using yii2 kartik-v-fileinput to upload images. Everything works, however, when one file is deleted in the preview, all the others are deleted too (they remain in the preview, but an empty array reaches the server, and there are no files there)
Preview type:

Field:

<?= $form->field($model, 'imgFiles[]')->widget(FileInput::class, [
                            'options' => ['accept' => 'image/*', 'multiple' => true, 'id' => 'img-456'],
                            'pluginOptions' => [
                                //'browseLabel' => '',
                                'showPreview' => true,
                                //'showCaption' => true,
                                //'dropZoneTitle' => '',
                                'showRemove' => true,
                                'showUpload' => false,
                                'showDelete' => true,
                                //'showUpload' => false,
                                //'showClose' => false,
                                //'previewFileType' => 'image',
                                'allowedFileExtensions' => ['jpg', 'png', 'jpeg'],
                                'maxFileCount' => 20,
                                'removeClass' => 'btn btn-danger img-btn',
                                'uploadUrl' => Url::to('some'),
                                'deleteUrl' => Url::to('site/delete-img'),
                            ]
                        ])->label(false) ?>

I catch pictures in the controller:

var_dump(UploadedFile::getInstances($form, 'imgFiles'));
                exit();

If you just download the files and do not delete anything, then everything is OK. If you select files and delete some, then an empty array reaches the server.

Answer 1

Try to use the default configuration from the plugin examples.
Then turn on the properties one by one.
And it's not clear yet whether you send the drawings with the main form or separately. If separately, it needs to be handled a little differently.
If together uploadUrl seemed to be redundant.