They popped out of nowhere all of a sudden! I restarted the studio/PC, turned off most beta features, and went on a different game. Yet nothing has changed.
This just randomly popped up for me aswell. I have a whole 5000 line script, and it’s just filled with them, even though the script works completely fine??
The orange line itself is not a bug in this case, but the crash definitely is.
The orange lines are there to indicate mistakes in your code, like using “deprecated” APIs (such as Humanoid:LoadAnimation). Hovering your cursor over them should tell you the issue. You can also use the Script Analysis window.
They probably appeared recently because of the following update:
This update enables a set of script warnings by default, called “nonstrict.” Before this update, the Script Editor would use “nocheck” unless you specifically told it not to, which disabled all warnings.