Significant Issues when changing text colour of a list

While I saw another bug reported for inconsistent text colour changes when applied to a list, I have found another issue that necessitates a new issue report: Data is being moved when I change the text colour en masse in a list.

Steps to reproduce:

1) Create a new page and create a numbered list.
2) Add some random text and create a list hierarchy such as the following:
1 - a - b - 2 - a - i - 3 - a - b - i - ii - 4 - a - i - ii
3) Either click and drag to select all, or Ctrl + a.
4) Click the colour palette drop-down and select a different colour.
Step result: Hierarchical levels are inconsistently coloured and, more importantly, data is moved. Some lines are now empty, with this missing text having been added to a previous list item.

This is causing some frustration and delay in my company, and I`d love to see this bug squashed! I`ll attach screenshots if I can figure out how. Thanks for your time,

Greg