Operating system: Darwin-15.6.0-x86_64-i386-64bit 64 Bits
Graphics card: Intel Iris Pro OpenGL Engine Intel Inc. 4.1 INTEL-10.14.74
Broken: version: 2.80 (sub 60), branch: master, commit date: 2019-05-06 10:54, hash: rB064273a4ae71
Short description of error
In the outliner, there are 2 shortcuts for clicking on items. one is alt click the other ctrl click to isolate. However, there is no secondary or contra shortcut to undo isolate mode. So basically one needs to undo it manually, in big scenes this is tedious.
Another point, on OSX when you use simulation numpad, i guess, i cant alt click in the outliner because it get a scroll function. So alt click to disable in all viewport wont work.
Exact steps for others to reproduce the error
Add a cube, select it and go to the outliner. Than do ctrl click and notice that you cant undo it.