Content formats lost when pasting contents onto alloy editor on chrome

• Type: Bug
• Status: Closed
• Resolution: Won't Fix
• Affects Version/s: 7.3.X, Master
• Fix Version/s: None
• Component/s: Alloy Editor
• Labels: None
• Fix Priority: 3
• Browsers:
  Chrome (latest)

Steps to Reproduce:

1. Use Chrome.
2. Go to product menu -> Content & Data -> Web Content.
3. Click add button to add a new WC.
4. Copy the contents from sample document: http://www.standards-schmandards.com/exhibits/wysiwyg/sampledoc.htm.
5. Paste contents onto alloy editor.

Expected result:
Content formats are not lost.

Actual result:
Some content formats are lost: No table line, picture centering lost.