Resize/move feedback for invisible shapes definitely could be improved, and we are tracking that issue. As a workaround, you can toggle the fill or stroke on for a moment, adjust the shape, and then toggle it back off.
If you’re using an invisible rectangle to define a hit area for Prototyping mode, you may also be interested in upvoting https://adobexd.uservoice.com/forums/353007/suggestions/12931899-actual-hotspots, which would let you more easily define interaction hotspots that don’t match up exactly with the size & shape of any of your visible artwork.S-Monkey commented
Yeah this is an absolute killer. Very poorly thought out and seems to be something that has been ignored for years. What an awful experience.