Did you lose your account settings? How about with newest version of 115?

That's not an issue. There's just the irritation that TB opens onto "Local Folders" and not the inbox. A machine I just updated today to the new TB does open on inbox. But I can't find the difference in their settings

By default, 115 opens to the last folder you had open when you last closed the program. There is, however, a dandy little add-on called Start with Inbox that will ensure that no matter where you were when you closed the program last, you'll open in Inbox. Try it; you'll like it.

If it did open in my previous location it'd be an improvement. That location would usually be the global inbox anyway. But no. It opens, or switches on opening, to the level above " local folders". There must be some setting. But I've compared it to another PC and can't see any difference in their settings. I must be missing something.