Oh.
I didn't know about the connection between execute anchored and tp facing until just now. Welp sorry for your time I guess I was just looking for execute anchored eyes this whole time. :\
No, I mean it isn't. Hold on I'll add more screen shots.
No execute commands involved. As in the description /tp @p ~ ~ ~ facing entity @e[type=!player,sort=nearest,limit=1] feet directs me to their feet plus my height, and "eyes" instead of "feet" points me to their eyes plus my height.
I actually discovered this bug in 18w43b while I was playing with new commands, but now I am upset that I can't simulate breaking a block without having the player click and without nasty particles! Please fix so I can get back to my life 😃 I'll try another computer tomorrow and if there is any difference I'll edit the report.
Should this be moved to a feedback or content suggestions area, or is it fine here?