I have a problem in upload component in vaadin 10.0.2 in vaadin in spring base.
So the problem is when I click upload component in Mobile Device ,after several clicks it works and open dialog to select file.even it is the same in browsers too but it happens rarely,In addition,I check this componnet in demo in your website and I found out that the component does not work properly.In fact , some time it works and some time it does not , so I force to click many times to see dialog to select file.