Reason is that your new provider probably is using a Windows server. Thous the default encoding is different because it is based on the operating system.
Code:
<bean id="freemarkerConfig" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">
<property name="templateLoaderPath">
<value>/WEB-INF/view/ftl/</value>
</property>
<property name="freemarkerSettings">
<props>
<prop key="default_encoding">UTF-8</prop>
</props>
</property>
</bean>
<bean id="viewResolver" class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">
<property name="cache">
<value>true</value>
</property>
<property name="prefix">
<value></value>
</property>
<property name="suffix">
<value>.ftl</value>
</property>
<property name="contentType">
<value>text/html;charset=UTF-8</value>
</property>
</bean>