In T45771#330426, @Campbell Barton (campbellbarton) wrote:

@Jose Mayi (xDarkProdigy), are you using http://smoothmouse.com ? - this is known to have problems.

developer note, walk-mode uses mouse warping, even when continuous-grab is disabled.

Hello Seth,

I don't know if this may be related to the issue, but on my Windows 10 Desktop, the feature only works if I press shift + F without moving the mouse. If I am moving the mouse while trying to go into fly mode, I will have the same issue as on my mac

It looks like I had already changed my default layout because when I did a factory startup, it just wouldn't work at all (not even in Default layout)

Just tried booting up in safe mode to see if any programs I have could be causing an issue, but the issue is still there

Just tried disabling Continuous Grab, but the result was still the same.
Here are the settings I have for mouse input: