White line appeared in script editor

Ok so, i’m new to scripting and over the last few days, I have noticed a white line appearing when i try to select a character. Here is what it looks like, I know my explanation isn’t too good.
I need help to remove this because it is getting annoying whenever i want to replace a character (as you can see by local function = )
Also, here are my studio settings:
I’ve tried to find a topic on this but nothing really works. Thanks.

1 Like

Press Insert (Ins) key

Sometimes it’s your insert button.

Thank you all, I hoped it would be as simple as this.