When working inside some Mathematica 12 notebooks (downloaded from the web), when the "=" key is pressed in an Input cell (e.g. when trying to type in "myFunc[r_]:="), as soon as the "=" key is pressed, the entry changes into the orange free-form input form. What setting in Preferences or Options Inspector is causing this behavior, and how can I disable this? This does not happen in a normal, blank Mathematica notebook on my machine. Thanks.
