Headless mode opens PopUp when downloading file with potentially dangerous file-ending

Hi,

while currently updating our testing infrastructure and the corresponding edge versions we test, we found problems using the "headless=new" argument. 

While edge was running in headless mode, when downloading an xml file, a popup still occurred, asking whether to keep the potentially malicious file. This seems to be unwanted behavior for a "headless" environment.

This was tested using Edge v109.0.1518.52 as well as some 110 versions.

Trying to solve the problem using several different profile preferences in selenium did not work: 

• Dowload.prompt_for_download -> false
• download.extensions_to_open -> application/xml
• download.set_download_behaviour -> allow
• safebrowsing.enabled -> true
• safebrowsing.disable_download_protection -> true

Are we doing anything wrong here? Should this popup still occur? Are there options to turn this off that we didn't try yet?

Thanks in advance.