Photo Paint -Versions X6 or later- holding the Alt key down while using a tool to get a straight path is no longer available after version X5...Why is this feature gone? Is there another way to use that feature?

I have had to resort to using an old Photo Paint version X4 to press and hold the alt key when using a tool to get a straight path. I use this frequently and it disappeared after X5. I have X7, X8 and 2019 but it is no longer available. I am hoping someone can tell me if there is another way to get this feature in later versions of Photo Paint.