Created attachment 1511283 [details]
Style Bug Demo

Description of problem:
While creating or editing a report, if a certain column has more than 1 styles registered, then remove one style, also removes the style immediately after it.
See demo for more understanding.

Version-Release number of selected component (if applicable):
5.10.0.27

How reproducible:
Always

Steps to Reproduce:
1. Navigate to Intel > Reports > Reports(Accordion).
2. Create a new report or edit an existing report, or copy an existing report.
3. Go to the `Styling` tab.
4. Choose a column, and add 3 styles for it.
5. Remove first or second style.

Actual results:
The selected style is removed along with the style after it.

Expected results:
Only the selected style must be deleted.

Additional info:
The issue exists on 5.9 as well, but it used to work fine on 5.8.