UI Bug when Viewing a running Parallel Multi-Instance Task

[danfunk]

I noticed a UI bug interacting with some ParallelMultiInstanceTasks, where each instance of the parallel task doesn't get displayed correctly in the UI. For instance the below task has 3 parallel instances, but it's only displaying one of them twice. I can access the other instances by copying the children guids directly from the network tab. But believe I should be able to just click into them from the modal. It doesn't always happen, but it happens at a decent rate ~50% of the time.