I've been experiencing this issue for some time too on my S8+. I had my display setting set at the lowest (HD+) and moved it up to FHD+. This solved the issue and now when the + is hit the options appear as they should and I no longer have to hit the x and + again. Adjusting the screen resolution from the lowest setting appears to fix the issue.
I've been experiencing this issue for some time too on my S8+. I had my display setting set at the lowest (HD+) and moved it up to FHD+. This solved the issue and now when the + is hit the options appear as they should and I no longer have to hit the x and + again. Adjusting the screen resolution from the lowest setting appears to fix the issue.