We don't handle the case when we don't have all information very well. Say that you have a recording that doesn't have any "Allocation in new TLAB" events. If you open it and go to the page Heap, you will have a large but completely empty table at the top of the page.

The least we can do is to print some information about that the table is left blank intentionally (because the events were missing), but we could potentially remove it, or make it smaller, or collapse it.