Exporting inspection results to html is extremely slow

v7.1

Today I invoked "Inspect incoming calls" and expanding some calls, resulting in a tree of maybe 1.5 screen widths (in pivot/vertical mode).
I tried exporting this to html, it is ridiculous slow and locks dev studio throughout the entire time.
I can see it is "removing" the [+] icons in the tree, one icon every 1 second (while doing something when traversing the tree?). Having a lot of such nodes I have to wait quite a while to get back to work again, without any ways of cancelling the operation.