To reproduce:
1. Open any project
2. Make sure Hidden object are set to visible
3. In Hierarchy window, try changing the visibility of objects

Expected: selected objects can be toggled on and of despite the Hidden objects parameter in Scene view
Actual:selected objects can be toggled once, but cannot be toggled off if Hidden objects parameter in Scene view is disabled (cannot be unselected)

Reproduced in: 2019.1.0a11
Not reproduced in: 2019.1.0a10

Note1: the mechanics seem to be reworked after initial 0a10 launch of the feature, however it's still rather unintuitive to use
Note2: feature implemented in 2019.1.0a10