User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0

Steps to reproduce:

I've customized the file association string in the windows registry
[HKCR\FirefoxURL-*****\shell\open\command] to

"C:\Program Files\Mozilla Firefox\firefox.exe" -osint -private-window "%1"

Actual results:

Upon updating firefox, it reset the open string to

"C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url "%1"

Expected results:

Firefox updater should have left that registry entry in-tact, or at least prompted whether or not to replace the string

The Bugbug bot thinks this bug should belong to the 'Core::Widget: Win32' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.