Maven filtering not applied in compiled class-file

Question

I encountered a weird issue in my maven project.

The filtering got applied in the java files but not in the compiled versions of it.

class vs java content

Here is the build configuration of this maven project:

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.8.0</version>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
            <version>3.2.1</version>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>shade</goal>
                    </goals>
                    <configuration>
                        <artifactSet>
                            <includes>
                                <include>me.lucko:commodore</include>
                            </includes>
                        </artifactSet>
                        <relocations>
                            <relocation>
                                <pattern>me.lucko.commodore</pattern>
                                <shadedPattern>xyz.joestr.zonemenu.me.lucko.commodore</shadedPattern>
                            </relocation>
                        </relocations>
                    </configuration>
                </execution>
            </executions>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-resources-plugin</artifactId>
            <version>3.1.0</version>
            <configuration>
                <encoding>UTF-8</encoding>
            </configuration>
            <executions>
                <execution>
                    <id>this-is-silly</id>
                    <phase>compile</phase>
                    <goals>
                        <goal>resources</goal>
                    </goals>
                </execution>
                <execution>
                    <id>why-must-i-exist</id>
                    <phase>test</phase>
                    <goals>
                        <goal>resources</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
    <resources>
        <resource>
            <directory>src/main/java</directory>
            <includes>
                <include>**/*.java</include>
            </includes>
            <filtering>true</filtering>
        </resource>
        <resource>
            <directory>src/main/resources</directory>
            <includes>
                <include>**/*.yml</include>
            </includes>
            <filtering>true</filtering>
        </resource>
    </resources>
</build>

Thanks in advance, Joel