Thank you for this illustrated report. After each update it's difficuilt to determine whether a well-known bug is fixed or not despite of the change log. So we all stay updated and waiting for further improvements.
I've created a flight plan with Simbrief "as usual". I've clicked on CPNY F-PLN REQUEST + INSERT. Here is the result. Some fields are blank and I can't go further. What's happening?
It takes time to check the cabin so I find the actual logic realistic. It also makes no sense that the cabin becomes ready once the purser is simply called. In the reality it's more complex especially with a full cabin.