Engineer config, quick build

[fireboy103]

the engineer config for quick build litterly doesnt work, ive changed up the binding keys many times. everything else works fine, but the quick build fucntion isnt working as it should

[Tvde1]

It works for me on multiple machines. What key combination are you trying?

You should click mouse 5 (for me that's the upper thumb button), then let go, then press either 1, 2, 3 or 4.
This should break the current building and show the build screen.