Issue Summary

Pasting a block of text that contains any tabs ('\t') will make the editor ignore line breaks.

Steps to Reproduce

1. Edit any field in Jira that uses the Rich Text Editor - for example, Comment and Description;
2. Paste the following while using the "Visual" mode:

   1	User A
   2 User B
   3	User C
   

3. Note that, even though the second line doesn't have a tab, it will still paste with no line breaks;

Expected Results

Line breaks should be interpreted regardless of other characters.

Actual Results

Line breaks are ignored and have to be manually inserted.

Notes

If the same block of text above has columns separated with spaces, this doesn't happen.

Workaround

Use the "Text" mode and, to preserve the spacing set by tabs, paste the text into a ''{noformat}' macro.