Portal walls rejecting portal placement?

In Portal, hitting invisible barriers when trying to place portals on valid-looking surfaces is incredibly frustrating. It halts your momentum and breaks the puzzle-solving flow, forcing you to search for alternate routes that may not exist. The Place Portals On Any Wall modifier eliminates this artificial restriction entirely. By overriding the game's surface checks, it allows you to anchor portals on virtually any geometric plane. This empowers you to create direct lines of sight and movement where none were intended. You regain full control over navigation, turning tedious trial-and-error into streamlined execution. Experience the true freedom of spatial manipulation, bypassing developer-imposed limits to solve chambers with unprecedented speed and creative flair.