Keyboard shortcuts don't work in Selenium (Python, Firefox) [NOT JUST NEW TABS]

Question

I'm just trying to open a new tab, but it never happens. I don't receive any error messages either. I've tried the following methods.

1. driver.find_element_by_tag_name("body").send_keys(Keys.CONTROL + 't')

2. ActionChains(driver).send_keys(Keys.CONTROL, 't').perform()

3. ActionChains(driver).key_down(Keys.CONTROL).send_keys('t').key_up(Keys.CONTROL).perform()

I've also tried adding "driver.find_element_by_tag_name('body').click()" in front of each to force Selenium to focus on the window. I would greatly appreciate help with this.

Thank you.

P.S. This applies for ALL Keyboard shortcuts. I just used Ctrl+T as an example.