Unable to indent multiple times on indention start

Issue Summary

When editing a page and starting an indention we should be able to indent multiple times within a single line.

Environment

(Optional - If Applicable)
*Confluence 7.0.1
*

Steps to Reproduce

1. Create/Edit a page
2. Add an indention
3. Attempt to tab the indention past the start point.

Expected Results

I should be able to indent multiple times at start of indention.

Actual Results

The indention does not allow multiple indents on the start.

Notes

(Optional - If Necessary)

Workaround

1. Install Confluence Source Editor on your Confluence.
2. Edit the page.
3. Look for the < > symbol on your top right hand corner below your profile picture.
4. Add the following CSS style for the bulleted list you wish to indent e.g. <ul>.

   style="margin-left: 30.0px;"
   

5. For example:
   Before:

   <h2>Outdented Title</h2>
   <p style="margin-left: 30.0px;">Indented Title</p>
   <ul>
     <li>First indented bullet<ul>
         <li>Second indented bullet</li>
       </ul>
     </li>
   </ul>
   

   After:

   <h2>Outdented Title</h2>
   <p style="margin-left: 30.0px;">Indented Title</p>
   <ul style="margin-left: 30.0px;">
     <li>First indented bullet<ul>
         <li>Second indented bullet</li>
       </ul>
     </li>
   </ul>