Songs disappearing on Top Tracks

I’ve kept for a track of my most streamed tracks for a while and have noticed how songs disappear out of the blue. Started with Sparks Fly (Taylor’s Version) a while ago and today France Galls “Il Jouait du piano debout” disappeared from my top 100. The system seems to know something is off as well because when you load in more entries (top 200, 300 etc.) It repeats song #99 a second time (aka it is both #99 and #100)