Did some more testing on this issue and I found something interesting.
Say you have 2 projects, one has 3 sequences open, the other has 2 sequences open. If you load the project with 3 sequences open, close it, then load the one with 2 sequences open, then load the one that had 3 sequences open it will now only have 2 sequences open!
It seems that whatever number of sequences you had open in the previous project is the number that will be open in the next project you open....exceedingly strange behavior for sure.
Please fix this ASAP!