Reproduce steps:
1. Create an custom app, then add 1 thousand records to the app
2. In the app gridview, scroll down very fast from the beginning records to the bottom

Observed: scroll up slowly from the bottom and observe the data in the gridview, a lot of data are disappeared on the gridview (these data existed in the JCR, if we scroll down slowly from the begining to bottom, we will see these data).

So I guess this is a lazy load problem of the gridview, when we meet the last record of the gridview then no lazy load in the gridview anymore, and middle data never load again.