Steps to Reproduce

http://zkfiddle.org/sample/1h7hl5v/1-ZK-4258-Broken-Slider-pageIncrement

• Click the tray of the slider bar on the right side of the handle.

Current Result

The handle moved to left side.

Expected Result

The handle should move right.

Debug Information

ZK-4125 side effect

Workaround

Avoid using pageIncrement