Problem description: Text, tables or any content in an open writer file cannot be copied and pasted anymore into a thunderbird letter, unless you choose to paste the unformatted text only

Steps to reproduce:
1. open any writer doc, or create your own
2. selects some text, a table, or whatever; it does not matter how it is formatted, and copy (or cut) it
3. Run Thunderbird (rel. 24.3 now), created a new message to be sent, and try to paste what you've copied from Writer into the new message content window
4. nothing is pasted, unless you choose to copy pure text content without any formatting

Expected behavior: until 4.1.4 Writer content was pasted into Thunderbird with most formatting intact (for example pasting a table you obtained a table in the message). Thiswas often very useful

              
Operating System: Windows 7
Version: 4.2.1.1 release
Last worked in: 4.1.4.2 release