Yes, it did crash again! We have a very conservative mindset regarding errors, and we'll crash preemptively whenever anything appears to be wrong. In this case, a validation check in the liquidation engine pointed to a bug when it was liquidating your position. You had a short position that was paying funding because of negative funding payments, and these payments should have gradually decreased your liquidation price, but these was a bug on this update, and your position was liquidated later than it should have been.
I've never seen a service that preemptively
crashes when something goes wrong. I could imagine shutting it down, but crashing doesn't seem right as a solution.
When I close a Position, the popup shows: "order created successfully!.". And nothing changes.
I placed 3 orders, each with different Leverage. Still a n00b here, but I would have expected them all to show up onder Positions. It seems they're added together, is that as intended?