GREF does not decrease

I am using a Xamarin Form to develop an application. From the logger, I saw a lot of magazines like GREF go up to XXXX and finally the application stopped in 2000.

I used Telerik Xamarin TabView form. I just keep switching tab and the GREF keeps growing. (One change adds 100GREF). for the contents of the tab there is inside the table and displaying text

What should I do to debug / fix?