Hi,
keep in mind that in a page there can be a lot of annotation, when you touch your overlapping annotations it intercepts the one on the top (your ink annotation).
With this method you can get the rect of your annotation. (maybe it can help you):
You can get annot from point using this method:
Annotation.GetAnnotFromPoint(float x, float y)
For more info check this
this
Can you please send us your pdf and the code you have modified? If it is private you can send it with a
ticket
.