[Web] [Editor] The 'keyword' is repeated with tab page addition

[gouyehappy]

Contribution guidelines

• I've read the contribution guidelines and wholeheartedly agree

I've found a bug and checked that ...

• ... the problem doesn't occur with the server or web themes
• ... the documentation does not mention anything about my problem
• ... there are no open or closed issues that are related to my problem

Description

The 'keyword' is repeated with tab page addition

Expected behaviour

The keyword does not appear repeatedly

Actual behaviour

The keyword is repeated

Steps to reproduce

null

Package versions

• Java: java --version
• Node: node --version
• Npm: npm -v
• Server: ./mvnw -Dexec.executable='echo' -Dexec.args='${project.version}' --non-recursive exec:exec -Dorg.slf4j.simpleLogger.defaultLogLevel=WARN -Dorg.slf4j.simpleLogger.log.org.apache.maven.plugins.help=INFO | tail -1

Configuration

null

System information

• Operating system: ...
• Browser: ...

[qianmoQ]

Message that will be displayed on users' first issue

[qianmoQ]

Fixed on #283