Open sequences do not reappear when project is relaunched
BUG: Several sequences open in tabs in Timeline panel disappear from the panel when the project is closed and then reopened.
Steps to recreate: undock Timeline panel and move to second monitor by itself. Open 6-8 Sequences from Project so they all appear in tabs. Save and close the project. Reopen project. In our tests, frontmost Sequence tab remains open and one other random one, but all other Sequence tabs are closed.
System: Mac Pro 5,1 or 4,1 (not sure of exact model), MacOS Sierra, Premiere 12.1.2, dual displays, ATI Radeon card.