[BUG?] Asset manager not deleting files on server unless upload triggered.

Running latest version (0.14.29) on local server. Using the example webpage preset. Ubuntu 18.04, Chromium 68.

Assetmanager init:

		assetManager: {
			storageType: '',
			storeOnChange: true,
			storeAfterUpload: true,
			embedAsBase64: 1,
			assets: all_files,
			noAssets: 'No assets here, drag to upload!',
			uploadFile: function (e) {
				var files = e.dataTransfer ? e.dataTransfer.files : e.target.files;
				var formData = new FormData();
				for (var i in files) {
					formData.append('file-' + i, files[i]); 
					console.log('File (i): ' + i + ' Files: ' + files);
				}
				$.ajax({
					url: '/file_upload',
					type: 'POST',
					data: formData,
					contentType: false,
					crossDomain: true,
					dataType: 'json',
					mimeType: "multipart/form-data",
					processData: false,
					success: function (result) {
						var images = result['data'];
						editor.AssetManager.add(images);
						console.log(images);
					}
				});
			},

			headers: {},
			params: {},
			autoAdd: 1,
			uploadText: 'Drop files here or click to upload.',
			addBtnText: 'Add image',
			dropzone: 0,
			openAssetsOnDrop: 0,
			dropzoneContent: '<div class="dropzone-inner">Drop media here.</div>',
			modalTitle: 'Select Image',
		},

And extend image type:

	const am = editor.AssetManager;
	editor.AssetManager.add(all_files);
	// Asset manager
	// Extend the original `image` and add a confirm dialog before removing it
	console.log('Adding custom image functions');
	am.addType('image', {
		// As you adding on top of an already defined type you can avoid indicating
		// `am.getType('image').view.extend({...` the editor will do it by default
		// but you can eventually extend some other type
		view: {
			// If you want to see more methods to extend check out
			// https://github.com/artf/grapesjs/blob/dev/src/asset_manager/view/AssetImageView.js
			onRemove(e) {
				e.stopPropagation();
				const model = this.model;
				console.log(model);
				console.log('ID:')
				console.log(model['attributes']['id'])
				if (confirm('Are you sure?')) {

					$.post('/file_delete/', {
						id: model['attributes']['id'],
					}, function (result) {
						if (result['success']) {
							console.log('Deleted file on server: ' + model['attributes']['id']);
							model.collection.remove(model);
						} else {
							model.collection.remove(model);
							console.log('Failed to delete file on server.');
						}
					}, 'json');
				}
			}
		},
	});

The all_files variable is load from php, and it has the right data and format, all images stored on the server.

The problem is that the onRemove is not triggering as it should. The images are showing up in the assetmanager modal correctly, but when pressing the X the function is not triggered. But they are deleted in the modal, but reappering when reloading the page. But if I upload a file, then it's working. The confirm popup is showing, and the file is deleted successfully on the server. Any Idea why this is happening? Did I miss anything or is this a bug?

Also when dragging an image to the canvas, the image is not showing up. Only the "missing file" ico and the name of the image.

Any help appreciated!