In versions previous to 126.96.36.199 of MaxCut if you had a grouped item that had an invalid sub item there was no way to easily identify it without expanding each grouped item.
For example, take the following job, everything appears to be fine.
If however you expanded the grouped items to see their sub items you would see that one of them was in an invalid state.
This is less than ideal so we have changed it. Going forward, if you have an invalid sub item, when you collapse everything to see the top later, the parent item is highlighted in red as well.
For example, we have a scenario where one of the sub items is made invalid.
It will now highlight the parent item (2) as well as the sub item (1). Collapsing all items, you can still see something is in an invalid state.