What are the steps to achieve the desired PrimeFaces theme appearance for selectOneMenu?

Need help with a JSF Primefaces project using the omega theme. The selectOneMenu dropdowns are not displaying correctly (missing line).

Current look:

https://i.stack.imgur.com/vF4ms.png

Expected look:

https://i.stack.imgur.com/hXsIB.png

Any suggestions?

<p:selectOneMenu id="systemRoleMenu" value="#{configuration.systemRole}">        
    <f:selectItems value="#{configuration.systemRoles}"/>
</p:selectOneMenu>

Web.xml:

<context-param>
  <param-name>primefaces.THEME</param-name>
  <param-value>omega</param-value>
</context-param>

Pom.xml:

    <repository>
        <id>prime-repo</id>
        <name>PrimeFaces Maven Repository</name>
        <url>http://repository.primefaces.org</url>
        <layout>default</layout>
    </repository>
    
    <dependency>
        <groupId>org.primefaces</groupId>
        <artifactId>primefaces</artifactId>
        <version>6.0</version>
    </dependency>

    <!-- Primefaces Version 6 Extensions -->
    <dependency>
        <groupId>org.primefaces.extensions</groupId>
        <artifactId>primefaces-extensions</artifactId>
        <version>6.0.0</version>
    </dependency>

    <!-- Primefaces All Themes -->
    <dependency>
        <groupId>org.primefaces.themes</groupId>
        <artifactId>all-themes</artifactId>
        <version>1.0.10</version>
    </dependency>

Additional notes: I have already excluded my custom CSS to see if it's causing the issue, but that is not the case.

Answer №1

After extensive troubleshooting, I discovered that the main issue stemmed from nesting html documents using <ui:include>. This method caused conflicts between stylesheets.

Solution: I resolved the problem by adding <ui:composition> within my included xhtml files. By doing so, only content inside the tag is included, preventing multiple html tags and stylesheet conflicts in PrimeFaces. The issue was successfully resolved.

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