This is not really a bug. However, it can be confusing.

 

When an item is hoisted in the scratch grid, the scratch grid can't display other data when opened from the properties pane or hyperlinks. This is easily fixed by removing the hoist, but it can be confusing.

 

I would personally prefer if new events triggering the scratch grid would cancel the current hoist. At the same time, if  the user is offered the choice to open a new scratch grid, maybe is that not necessarry.