2019.2 version Idea after idea in every language level settings are reset back to the 1.5 version of the problem

This is the 2019.2 version of the bug, unless the replacement version. Temporarily no once and for all

  <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.5.1</version>
                <configuration>
                    <source>11</source>
                    <target>11</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

Each addition of this code in the pom.xml file can be automatically set.

 <source>11</source>
 <target>11</target>

How much you want to write the version number