I’m fairly certain it’s just the names that are flip flopped. The ‘left’ sloping is actually the ‘right’ and vise versa. Not that it doesn’t need to be fixed, just that it probably doesn’t climb very high on their to-do list.
This issue is still ongoing. You said it was brought to your attention in May, and it is now December. These inverted sloped walls are the entire reason I bought this game. Please fix this. You have had over 6 months to fix this and you haven’t.