[2019] Bug I get for floors only. When my crosshair is on the a specific part of the floor and if I am pushed against the floor, it wont edit, despite the crosshair being on it. As you can see in the video, I have to be pushed against it, as when I move a little back and edit the same place, it edits then.

There really isnt much that can be done here Karam. It is nearly the same as when turbo building and a player will place a floor above them while trying to do 90s. A simple raise or lowering of the crosshair will change where the edit or build will go.

This case would/should affect all of Fortnite and not just mobile specifically. I know you are trying an extremely precise edit, but I would attempt to just look further towards the roof/floor above you in order to edit. Unless I can find evidence that this new versus by design, I expect this would not change.