Hello everyone!
Since yesterday, when I draw polygons, the guidelines no longer appear. This makes it impractical to use Bézier curves. I've tried closing and relaunching the software, but to no avail. Thank you for your help.
As you can see, there are no dotted lines between the blue lines. It's like jumping through hoops to find out what the figure is going to look like! I'd like to find the dotted lines, as in the second capture, taken from a YouTube video.

Sincerely,
Aleksandre