Datepicker strange behaviour

[Anonymous]

Hello,

created an application with an datepicker and deployed it to the server.

The DatePicker has a strange behaviour (in WebView only).

It happens randomly that the design got destroyed.

Pressing "F5" or Change tabs solves this problem, but it makes me crazy, because I don't unterstand why this is happening?

I also use extensions in my application. Maybe there is a conflict?

Thanks and best regards.