I'm using Blender 2.81, when I open old Blender files such as Blender 2.80 or older the toolbar layout in the 3D Viewport are different than the default toolbar layout when starting a new project.
This is what it looks like when I open an old Blender 2.80 file
And this is what it looks like when I start a new Blender 2.81 project
And if I open projects from Blender 2.79 or older the toolbar appears on the bottom of the 3D viewport (which is even more annoying). Is it possible to reset all the layouts to the default 2.81 layout?