I am having a similar problem; I save a project with one sequence tab open (and no other ones have been open during the session). When I open the saved project, the wrong sequence is open. This has caused me panic more than once, until I caught on that it was a bug of some kind.
So far, I don't see a pattern or reason for this. I just know that when a saved project opens, it will 100% of the time have the wrong sequence open.
I too have the same problem. It is very annoying considering I manage dozens of projects daily and it takes a damn good memory to remember wich sequence I was working on cause some of my projects contain many sequences with many versions of an edit.
I work on a PC station
HP Z820 with dual quad cpu Xeon processors
SSD Raid system drives
A hint to what might be happening is that every time I close the application, I get a crash window that tell me that Premiere Pro as stopped working. So basically it is not finalizing the shut down and this could very well be the problem.
Does a crash keep PPro from remembering tabs? Not in my experience. I get my fair share of crashes, but I also have closed down gracefully and same problem.
I can only guess maybe we have a lot of tabs open? I keep over 20 open at all times. Have have a *lot* of sequences in my project.
Maybe you do too?
Might explain how Adobe missed it... smaller test projects for bug checking? Not enough tabs or sequences to trigger this bug?
Your probably right.