Summary

When editing the text color by using the Editor panel for existing coloured text, the color does not change as expected.

Steps to Reproduce

1. Put some text in the comment box
2. Highlight the text and edit the color by using the "Text Color" on Editor Panel
   
3. Then, use the "Text Color" drop-down list to change it to a different color

Expected Result

The Text should change to the latest chosen color.

Actual Result

A new color tag is added inside the existing color tag. Example:
On Step 2:

{color:red}colored text{color}

On Step 3:

{color:red}{color:#333333}colored text{color}{color}

So, the color of the text remain unchanged.

Workaround

Manually change the color tag.