All layer invisible but still see line shape

[Asterix]

Trying sending shapes on different layer. I end up having a shape (only the lines of it) that still show up when all layers are invisible.
What happen?

Thanks.

[Víctor Paredes]

You will always see the paths of the selected layer, even if the visibility is of. It's a very useful behavior for many tasks.
If you don't want to see the paths, uncheck the ticket on the right down corner, close to "display quality".