Viewport modes menu shows wrong mode when 2 or more View3Ds in same scene

If there is 2 View3Ds in the scene and you set different viewport mode on each scene, viewport modes menu shows wrong mode for one of the views.

• Create 3D project
• Add another View3D into the scene
• Select "Quad" viewport mode on one of the 3D scenes
• Select "3+1" viewport mode on the other 3D scene
• Change back to the 3D scene with "Quad" mode and open Viewport modes menu

--> Menu shows "3+1" mode as active mode.