Thanks for using Syncfusion product. Kindly find the response for your queries below.
Query 1: When user uses a touch pad on laptop which is very inaccurate then the buttons trigger the drag operation instead of click.
Response: We have created sample with zooming and we are not able to reproduce the reported issue. For your reference we have attached the sample. Kindly find the sample from below location.
Since we can’t able to reproduce the reported, kindly revert us by modifying the attached sample or provide your sample with replication steps.
Query 2: The second part of screen cast shows that the zoom in and zoom out buttons does not work correctly when the panning mode is enabled, or probably it is working but the redraw method is not called due to java script errors.
Response: We can able to reproduce the reported issue. So we have logged issue report on “Zoom in and zoom out on zoom tool buttons is not working properly when the pan is enabled”. Fix for the issue will be included in our volume 4 main release which is expected at the mid of November 2016. For the reported issue, we have created branch incident (#167085), so kindly follow up with the incident (#167085) for further details.