In AWI, when I click on an object in the right panel, the previous selection is not unselected.
For example,if I click on 3 objects (without holding CTRL button), all 3 will be selected (highlighted).
This issue doesn't happen in non-touchscreen devices.
Why does it happen?
The problem is that using the AWI with a touch device installed different events are generated when using the AWI on a computer without a touch device.
At the moment the AWI is not optimized for touchscreens.
You can disable this behavior in chrome by opening chrome://flags/#touch-events and setting "Touch events api" to disabled.
After that the select will work one by one.