Bugs that happens only in the build version and not while playing in the Editor

Yes, correct, for example, on my laptop the controller works, but then a friend of mine’s laptop doesn’t, and I don’t know how to fix it.
For the controller, I use “Set Keyboard Focus” after “Set Input Mode UI Only” at the very start or “Set Input Mode Game and UI” when playing.

Is there something specific that I have to do for the controller settings/BluePrints to fix this?

Another example, I had to change the Runtime Generation under “Settings - Nav Mesh” from Static to Dynamic to make the Nav mesh and the AI works in the level in the build version, which I have been told that is not ideal.