Placed blocks are invisible until updated

Hey all! The title kinda already says it. I am trying to place a new wall of blocks with an item, when it is used on an existing wall. Basically pushing it back a block. (little vague, I don't know how to explain it better) It's a room in a different dimension and when I use the item to extent the wall, it basically turns into ghost blocks. However when I exit the dimension and re-enter it, then the blocks are properly updated. I would prefer it if the blocks updated immediately.

I tried all the things I could find thusfar;

• only letting it run on the server
• using a parced /fill command instead of the Place procedure
• Force updating the chunks visually

I do not know how to embed an imgur image. But if you click on the broken link, in the code; all the stuff above it just a way to get the vars I need to get the wall in the right place.