ViewScoped bean reconstructed on every postback - jsf

Question

I've a #ViewScoped bean
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
#ManagedBean
#ViewScoped
public class MyBean implements Serializable
It is reconstructed on every postback (with all obvious consequences such as losing initial properties). How is this caused and how can I solve it? If it is not solveable are there any workarounds?
I cannot change the scope of the bean to for example #SessionScoped due to non technical reasons.
Following State Saving Method is configured:
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>server</param-value>
</context-param>
All JSF Related files out of my pom.xml
<!-- JSF Files -->
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>mojarra-jsf-impl</artifactId>
<version>2.0.0-b04</version>
</dependency>
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-api</artifactId>
<version>2.2.12</version>
</dependency>
<dependency>
<groupId>javax.faces</groupId>
<artifactId>jsf-impl</artifactId>
<version>2.0.2-FCS</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.faces</groupId>
<artifactId>javax.faces-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>

Answer 1

This doesn't make sense.
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>mojarra-jsf-impl</artifactId>
<version>2.0.0-b04</version>
</dependency>
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-api</artifactId>
<version>2.2.12</version>
</dependency>
<dependency>
<groupId>javax.faces</groupId>
<artifactId>jsf-impl</artifactId>
<version>2.0.2-FCS</version>
</dependency>
<dependency>
<groupId>javax.faces</groupId>
<artifactId>javax.faces-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
Get rid of them all. They're incompatible with each other. This can have many consequences, of which a broken view scope is indeed one.
To use Mojarra on Tomcat, just grab the single org.glassfish:javax.faces dependency.
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.faces</artifactId>
<version><!-- Check javaserverfaces.java.net for latest version --></version>
</dependency>
Latest stable 2.2.x version is currently 2.2.12.
Related potential causes:
#ViewScoped bean recreated on every postback request when using JSF 2.2
#ViewScoped Managed bean loads many times during postback
#ViewScoped calls #PostConstruct on every postback request