I use the arrow keys, up and down to move, insert key for jump, Lshift for sprint, left arrow key for interact.
When I go into build mode I change the keys to w and s to move, the e to interact, q to sprint, and r to jump.
Side step keys are never changed.
So I'm always changing my keys. One thing I noticed is when I hit the minus and plus keys they weren't doing anything.
I went into the advanced settings and set them up. Then they worked like they should.
I would suggest trying to set the keys in advanced settings to see if any keys are conflicting with your key setup.
Another thing I noticed is the key settings are red when I have them set for normal play and when I change them for build mode they turn grey.