Perhaps I'm just dense, but I'm not seeing how the "solution" addresses the issue raised in the OP. The "solution" above shows a crafting screenshot; the OP asked about harvesting.

When I am out in the field, I encounter two problems with collection feedback (aside from the absolutely dreadful "sorting" issues):
1) The pop-up tells me only how many of the resource I have ON HAND with me out in the field -- it doesn't tell me how many I have on my retainer(s). And, since I have no access my Retainers' inventories (why can't I at the very least browse their inventories?), there is no way for me to find out this information without stopping what I'm doing and running back to the Retainer(s). Highly inefficient use of time.

2) The pop-up only lets me how many NQ resources I have on hand with me out in the field. In order to know how many HQ I have, I have to slog through all the pages of inventory until I happen to find the item for which I'm looking.
I wholeheartedly back the suggestion proposed by the OP. Make the pop-up show both NQ and HQ. To make it even better, include lines to show what is in stock on my Retainer(s). I can't think of any reason why this wasn't included from the beginning.