Updating Epic colour doesn't reflect on the Board immediately

Issue Summary

Updating Epic colour doesn't reflect on the Board immediately

Steps to Reproduce

1. Select an Epic issue on the Board
2. Change Epic colour

Expected Results

The updated colour should be seen in the Epic issue card

Actual Results

The Epic will show the previous Epic colour even after reloading the page

Workaround

Change the status of the issue and move it back to the previous status.