Check out the new features of PP2018, you can now open multiple projects. Do a search around for that. You may find some way to prevent that from happening. Otherwise, you'll need to close an open project first.
Sorry to hear about this.
Everytime you switch between sequences.The windows go back to the center of the screen and this is really annoying.
Please try to reset the workspace. You can refer to the link mentioned below:
With this version If I don't close the project first, the sequence from the previous project are showing up in the new one. I basically have to close a project before opening another one.
Are you referring to the multiple sequences open in the Timeline from different projects? Please share a screenshot of your workspace to understand the issue better.
I am sorry for the assumption about the windows reverting back to their default position everytime I switch sequences. After awhile we realized that even windows softwares where doing the same thing.
The techs solved it by trashing the user profile in Windows and creating a new one.
Glad you found the solution. Thank you for letting us know.