Dynamics GP–Clicking “on order” in inventory enquiry shows blank empty with no purchase orders

Seen this from three users recently. The issue is that the user clicks the on order hyperlink text in item enquiry to see the purchase orders in Purchase Order Processing Item Enquiry, but nothing is shown in the window.

Notice at the bottom it says processing. I assume that this window is trying to populate on another thread to keep it responsive and that thread is never returning the results?

Going to the GP process monitor in this example showed that it was clogged up with a posting process that was not budging.

Once the user was cleared down, previous transaction level posting error dealt with and looked again, everything was working as expected.

I also have seen where doing this same thing but from a link I provide in another window, that calls the same enquiry window causes it to work. Weird! I can only think there might be two different methods being called, one with background and the other not? When I call it in my code I’m getting the foreground, when GP does it, it uses the background?

I’m guessing at all this, but thought it worth documenting the findings so far, I will come back to update this post if I find any root causes.