Cannot send []{} characters with sendKeys function in headless mode

[balazs-zsoldos]

If I want to call webElement.sendKeys("{"); on an input field, nothing is written into the field.

[balazs-zsoldos]

Solved this issue by removing the special characters from com.machinepublishers.jbrowserdriver.Robot.textMap. By removing the characters, the non-headless issues are gone, too (like #139). I guess this map has an important role, but it would be nice if we could configure its content before starting the browser.