There are multiple expanders on the page but all of them seem to cause the crash. The layout is something like this:
 <StackLayout>
            <ScrollView>
                <StackLayout Padding="3,0,3,0">
                    <expander:SfExpander>
                        <expander:SfExpander.Header>
                            <Label Text="{Binding MyText, StringFormat='Text- {0} ore'}" VerticalTextAlignment="Center" />
                        </expander:SfExpander.Header>
                        <expander:SfExpander.Content>
                            <StackLayout>
                                   // some sfTextInput here
                                   // 5sf checkboxes
                            </StackLayout>
                        </expander:SfExpander.Content>
                    </expander:SfExpander>
                 </StackLayout>
            </ScrollView>
            <Button
                Command="{Binding ChangeCommand}"
                HorizontalOptions="Center"
                Text="Button Text" />
 </StackLayout>