Scala-metals integration: double clicking any language keyword (e.g. def/var/import) will cause the enclosing definition paragraph to be selected

This is only observed on scala, other languages using LSP are file

conventionally, selecting paragraph should be reserved for triple-click

I exported the LSP communication and can't see cause of this behaviour, so I assume it is a plugin error:

[Trace - 17:39:18] Sending request 'textDocument/documentHighlight - (30)'.
Params: {
  "textDocument": {
    "uri": "file:///home/peng/git-release/scalatestplus-junit5/src/test/scala/org/scalatestplus/junit5/ScalaTestEngineIntegration.scala"
  },
  "position": {
    "line": 47,
    "character": 3
  }
}


[Trace - 17:39:18] Received response 'textDocument/documentHighlight - (30)' in 0ms.
Result: []


[Trace - 17:39:18] Sending request 'textDocument/documentHighlight - (31)'.
Params: {
  "textDocument": {
    "uri": "file:///home/peng/git-release/scalatestplus-junit5/src/test/scala/org/scalatestplus/junit5/ScalaTestEngineIntegration.scala"
  },
  "position": {
    "line": 51,
    "character": 0
  }
}


[Trace - 17:39:18] Received response 'textDocument/documentHighlight - (31)' in 0ms.
Result: []


[Trace - 17:39:18] Sending request 'textDocument/codeAction - (32)'.
Params: {
  "textDocument": {
    "uri": "file:///home/peng/git-release/scalatestplus-junit5/src/test/scala/org/scalatestplus/junit5/ScalaTestEngineIntegration.scala"
  },
  "range": {
    "start": {
      "line": 47,
      "character": 0
    },
    "end": {
      "line": 51,
      "character": 0
    }
  },
  "context": {
    "diagnostics": [],
    "triggerKind": 2
  }
}


[Trace - 17:39:18] Received response 'textDocument/codeAction - (32)' in 0ms.
Result: []

No source file or test is named. Reproduce the double-click behavior in a Scala file using Metals, then inspect the LSP client handling around the reported documentHighlight and codeAction requests to determine where paragraph selection is introduced. Done means a double-click selects only the word while triple-click still selects the paragraph.