Classic UI 1.8.1 and new slider: major problem

Using the new slider provided with Classic UI in openHAB 1.8.1, I succeeded several times to enter in a loop with infinite update of the item (always with the same value). This is clearly the classic UI that update the item because if I close the WEB browser, the updates stop.
Unfortunately, it is not clear for me what is the exact scene to reproduce this issue.

I opened the issue #3985.