Universal Photos, old photos popping up after being cached

[Riderzzz]

hi all,

I use my photos app for storing all my photos.
At this moment have photos from 1982 till now.
My iPhone (what I use most to browse with) has the setting to optimize my photos for disk usage reasons.
When I look at a old photo I see it's getting downloaded to a better version.

Now the weird part is. In my "all photos" directory these old photos I have been watching are popping up as "recently" photos.

Is this a normal behavior for the app, it is it something I can remove?

Hope someone canhelp me out here.

 

[Riderzzz]

The weird thing is that I can't reproduce this problem with my iPad.
Looking at albums from a few years ago won't add them to recent photos.

Still my iPhone is doing this and I don't understand. It only happens when I picture is downloads on full resolution,

Is this a bug?