Where are the settings for the Run window?

What run configuration do you use? Please share screenshots that illustrate the issues

sure, it's a problem and no apparent options with the default run configuration

const a = [];
const o = { a: 1, b: 2, c: 3 };

for (const i of Array(100).fill(null)) {
  a.push('spam');
}
for (const i of Array(100).fill(null)) {
  console.log('new');
  console.log(o);
  console.log(a.join(' '));
}

I see.
This is a consequence of enabling using terminal console for Node.js run configurations - terminal doesn't allow disabling word wrapping.
You can work out the issue by disabling it. To do this, please try the following:

• choose Help | Find Action... on the main menu;

• type registry to locate the Registry

• find nodejs.console.use.terminal key there and disable it.