Axis Mapping Glitch?


I have been struggling with an issue with version 4.18.3 for a couple days now. It appears that my axis mappings only register every other frame. I created a simple project that prints the value of an axis mapping every frame, and when I hold down the button, it seems to only print the correct response every other time. I have tried verifying the installation and creating new projects.

Any ideas about what could be causing this?