Calendar: scrolling makes events dissapear?

[edulid]

See 1.png , 2.png , 3.png. One event disappears if I scroll the calendar one step. Then it appears again after scrolling another step.

I have observed similar behaviors with other events. What may be happening here?

Using Smartgwt 4.1p power 17.01

[edulid]

Another example: 1.png, 2.png, 3.png, 4.png. Each time I scroll some events appear, and some others disappear. This is very strange.

[Isomorphic]

We need a minimal, standalone testcase for this, complete with calendar settings and data, because we don't see this effect in framework samples against latest 4.1.

[edulid]

This seems to be corrected in 5.0p, I have not seen this effect in the evaluation version.