Kotlin syntax highlighting ---- extention function

[yvvt0379]

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App Version: 2021.1.3 Standard Edition

Affected Device(s): Huawei Changxiang 10e with Android 10

Describe the bug In kotlin, you can write like this: fun ClassName.functionName(parameters: Types) {...}, and you can go to https://kotlinlang.org/docs/extensions.html to see more info about it. When I write a extention function, it is ClassName, not functionName, that is highlighted.

To Reproduce Steps to reproduce the behavior:

1. Create a kotlin file (.kt)
2. Write an extentiontion function as I mentioned above
3. See how it's highlighted

Expected behavior According to the syntax about extention function, it's functionName, rather than ClassName, that should be highlighted.