Release notes for Optimizely updates

Chrome on Mac: Blue border of hovered property did not appear when you defined a block type containing a video property.

Steps to reproduce:

1. Open any page with the Content Area property.
2. Create a new `Editorial Content` block.
3. Click `Quick edit` on the newly created block.
4. Drag and drop an image from your local disk to the XHTML property.
5. Navigate to the block and check it's in the `For This Block` folder.

Expected result:

Images are created in the `For This Block` folder.

Actual result:

Images are created in the `For this page` folder.

Bug in the form of a race condition in

EPiServer.DataAbstraction.RuntimeModel.Internal.ContentModelILCompiler.GetOrGenerate().

The bug causes 500 Internal Server Errors for visitors on high volume sites during site startup.

Introduce an index that will help this highly utilized stored procedure that backs one of the provider calls to .GetChildren(). Adding this index will bring each of the branches down Logical IOs by 98+% on tblContent.

Steps to reproduce:

1. Create a Alloy site.
2. Configure a custom content provider (for example, an XML content provider).
3. Create a content item on the default content provider with ID XXX and publish it.
4. Create a content item on the custom content provider with the same ID XXX and publish it.
5. Create a content item that includes an XML html string property.
6. Add content link (XXX) and custom content link into XML html string property.
7. Publish the content item from step 6.

Expected result:

Publish should be done without an exceptions.

Actual result:

Publish throws exception (item already exist).

Import content to a site with keep identity.
You see lot of warnings like:
"10.5.2 Export/import warning: [Importing content 106_107] Property 'EPi:SystemReference' does not exist on destination content type".

The class name ObjectEditingMetadataHandlerRegistry should be updated to MetadataHandlerRegistry.

See also Editing objects in the CMS Developer Guide.

Steps to reproduce:

1. In edit view, open the Media Selector dialog box.
2. In this dialog box, select a content item.
3. Open its context menu and select Open in Image Editor.
4. Update some of the image's fields and then choose Save as a copy or Replace original image.

Expected result: ** 

The Media Selector dialog box is closed.

Actual result: 

The Media Selector dialog box is not closed.

Steps to reproduce:

1. Go to admin view > Config tab> System Settings.
2. Enable the "Disable deletion of content versions" check box.
3. Click Save.
4. Go to edit view to prepare testing data.
5. Create a page having more than 20 "Previously published" versions.
6. Go to admin view > Scheduled Jobs > Trim Content Versions.
7. Start the job manually.

Expected result:
As mentioned in the user guide, selecting "Disable deletion of content versions" disables the automatic deletion of versions caused by the "Maximum number of versions" field. However, "Maximum number of versions" will be ignored if "Disable deletion of content versions" box is selected.
The expected result is that no version is deleted by "Trim Content Version" job.

Actual result:
All "Previously published" versions exceeding 20 are deleted.

Steps to reproduce:

1. Use debugging scripts (console errors are not displayed for release version), and open the developer console.
2. Go to edit view and then the trash view.
3. Refresh the page.

Expected result:

No errors are displayed.

Actual result:

Console error is displayed: "TypeError: Cannot set property 'hideView' of undefined"