The point we are all trying to make is it's hard to identify any issues when the sim is unplayable. I'm glad you're not experiencing any problems, but 1.5.4 is not an option for many of us. I reverted with no qualms, but it's at ED's loss, not mine.
And, given you're an ED representative on these forums, a less patronizing and more understanding approach would be nice. It's even more frustrating when all we get for reporting these gamebreaking issues is snarky comments and "PS" posts on your side.
No disrespect, just a friendly suggestion. :D We're here to help with OBs, but it's hard to do so with the current circumstances.