[Python] Selenium send_keys does not send comma

I try to use send keys like this

price = driver.find_element(By.XPATH,'//*[@id="contentproform-ppv_cost"]')
price.clear()
price.send_keys("12,99")


Which only results in sending 1299. I tried to paste it from the keyboard with the same result. What am I doing wrong?

EDIT: This is the input tag:

<input type="number" id="contentproform-ppv_cost" class="form-control" name="ContentProForm[ppv_cost]" value="5.55" placeholder="Price for end-users" step="0.1" min="1.5" max="50" data-trigger="Input">


My workaround so far:

price.send_keys("12")
for i in range (9):
price.send_keys(Keys.ARROW_UP)
price.send_keys("9")


EDIT2: Using 12.99 also results in 1299

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