Element sendKeys changes does not deliver single newline character

[TriciaCrichton]

🐛 Bug Report

Nov 18th change to Element.sendKeys in the Java bindings results in loss of a single newline character. This was introduced in fc12197.

If the input to sendKeys is "\n", nothing will be sent to the driver.
This results in breaking test FormHandlingTest.testShouldSubmitAFormUsingTheNewlineLiteral.

I believe this will also drop a trailing newline, but I haven't confirmed that.

To Reproduce

Run test FormHandlingTest.testShouldSubmitAFormUsingTheNewlineLiteral. The test code is:

public void testShouldSubmitAFormUsingTheNewlineLiteral() {
driver.get(pages.formPage);
WebElement nestedForm = driver.findElement(By.id("nested_form"));
WebElement input = nestedForm.findElement(By.name("x"));
input.sendKeys("\n");
wait.until(titleIs("We Arrive Here"));
assertThat(driver.getCurrentUrl()).endsWith("?x=name");
}

The test fails the wait, because the navigation never occurs. the SendKeys command delivers an empty string to ChromeDriver.

This build also shows the failure: https://github.com/SeleniumHQ/selenium/runs/309284705

Expected behavior

ChromeDriver should receive the text "\n".

Instead the text is empty: "".

[lock]

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