App Store Algorithm Change

It seems that there's a new algorithm change, or bug, that has occurred in the last two days. My conversion rate for one of my apps is quite low, usually hovering at about 10%. In the last analytics day, it has shot up to 40% (See image)

I knew something was wrong, so then I checked impressions, and here's a correlating screenshot:

I have a few apps listed on the store all in different niches and targeting different audiences, so I thought that maybe it was just something that happened for this app. I checked the other apps, and the same spike can be seen.

Apple, is this an algorithm change, a search bug, or an analytics bug? 80% of my downloads for this specific app come from direct search. Please let us know, Rafal