Issues about the memory debugging tools

I have upgraded the SciChart version to v3.2 and tried to use the memory debugging tools. https://www.scichart.com/documentation/js/current/webframe.html#MemoryLeakDebugging.html

Below are few issues I found:

• The example in the Memory Leak Debugging page got typo. It should
  import the MemoryUsageHelper instead of MemoryUsageTracker.

import { MemoryUsageTracker } from “scichart”;
MemoryUsageHelper.isMemoryUsageDebugEnabled = true;

• When I turn on the memory debugger, I always got this warning when I
  move the crosshair in my chart. Is this expected?

DeletableEntity.js:70 Failed to remove
CursorTooltipSvgAnnotation_42d65afd-b859-4e14-b82d-7cda881cf1eb from
the Object Registry Probably it has been already deleted!

• I also got the warning in point 2 when I try to delete annotation
  from the chart. I think it’s because I am trying to do something
  like this:

sciChartSurfaceRef.chartModifiers.remove(markerAnnotation);
markerAnnotation.delete();

The warning will be gone if I remove the second line above. Is it true that if I remove an annotation/dataSeries from a chart, I don’t need to remove that annotation/dataSeries manually afterward (i.e. annotation.delete()) ? Also, if I deleted a chart, I don’t need to delete it’s annotation/dataSeries manally, right?