Kanban or Iteration Planner Doesn't Load if Cases Use Custom Icons

Issue:

When updated, a custom icon on the page does not load for Kanban.

Environment:

All Manuscript version and Flavours.

Audience:

Customer

Root Cause: 

Custom Icon does not compile with Kanban column.

Steps to reproduce:

1. Configure cases with custom icons for category
2. Open the iteration planner or Kanban
3. Ensure the columns have cases with the custom icons

Resolution:

1. Remove custom icons
2. If needed we can roll back affected accounts to its best-known state.