Rendering artifacts still has problem .

[amitkumarsharma008]

In L, the rendering artifact issue is very well solved by the 39th commit but when we drag the cells on the screen at a pretty high speed we can still see the Cells disappearing/invisible issue.

[amitkumarsharma008]

In L, the rendering artifact issue is very well solved by the pull request 41 but when we drag the cells on the screen at a pretty high speed we can still see the Cells disappearing/invisible issue.

[Doctoror]

The randomly disappearing problem on Lollipop (Nexus 5) still not fixed though the last commit says it is.

[denisk20]

For me it is not 100% fixed, but greatly alleviated. I can see the disappearance only when I drag cell from position 1 to position 0, but it gets fixed when I release the cell. I can leave with it for now.

[NG-Studio-Development]

In AbstractDynamicGridAdapter, method hasStableIds() replace return true to return android.os.Build.VERSION.SDK_INT < 20;

Example: @Override public final boolean hasStableIds() { //return true; return android.os.Build.VERSION.SDK_INT < 20; }