Opening new tabs in Firefox and Chrome with Selenium doesn't work

I read a lot of options related to the way new windows are opened with Selenium. All the questions and answers are from years ago, maybe that's why they didn't work for me. That's why I want to ask this question again.

My first approach is to use javascript action:

((JavascriptExecutor) getDriver()).executeScript("window.open('','NewWindow');");

My problem is different results in Firefox and Chrome. Firefox opens a new window, Chrome opens a new tab. This means my test cases won't work if I execute in a different browser.

After that, I thought about another approach. If I send the shortcut to open a new tab, probably both browsers have the same behavior. This started my nightmare. In current Chrome and Firefox versions, none of the following options will open anything:

1. Send key connection shortcut:

   getDriver().findElement(By.xpath(".//body")).sendKeys(Keys.COMMAND+"T");
   

2. Send keystrokes Multiple keystroke sequences:

   getDriver().findElement(By.xpath(".//body")).sendKeys(Keys.COMMAND,"T");
   

3. send chord

   getDriver().findElement(By.xpath(".//body")).sendKeys(Keys.chord(Keys.COMMAND + "T"));
   

4. use action

   final Actions builder = new Actions(getDriver());
   builder.keyDown(Keys.COMMAND).sendKeys("T").perform();
   

I'm thinking of trying to use the COMMAND key to click down on any link, but maybe there's another easy way to open a new tab in a different browser. Here is my question, are you now an efficient way to open a new tab instead of a new window in a different browser for the same operation?

extra information

Selenium Version -> 3.141.59

Chrome version -> 79.0.3945.79

Firefox version -> 70.0.1

Thank you in advance.