Help. Does anyone know why this floating shelf shows in plan to the wall, but in elevation there is a gap?

[IRDesign]

[mtldesigns]

@IRDesign

What's the plan view look like?  Can you show a large elevation view to see what's going with the whole wall?  

 

 

Edited February 10 by mtldesigns

[Rpadge]

In plan, you may be seeing the baseboard below?

[SteveCanbury]

just edit it to the wall in elevation view