Switching between versions in view mode does not work correctly.

Steps:
1. Log in as admin.
2. Create new LP.
3. Add a tag block with one paragraph (<p>1</p>).
4. Publish.
5. Edit.
6. Add another paragraph to the same tag block.
7. Publish.
8. From the Versions pop-up switch to view the archived version.
9. Verify preview. [OK]
10. From the Versions pop-up switch to view the published version.
11. Verify preview. [NOK, preview for archived version stays]

Remarks: Also when opening browser console (or scrolling the page) spinning wheel appears and application hangs on it.