Chrome OS Version: 62.0.3200.0
Chrome OS Platform: 9900.0.2017_09_01_1727
Device: Eve

Steps To Reproduce:
(1) Have a folder with at least 3 elements
(2) Select the element with index 1
(3) Additionally, select the element with index 0 (2 items should be selected)
(4) Move those items to some other location

Expected Result:
The item that used to be at index 2 is selected in check-select mode (except if 742689 has been fixed, then whatever that has decided the expected behavior to be)

Actual Result:
No file is selected

How frequently does this problem reproduce? (Always, sometimes, hard to
reproduce?)
Always

What is the impact to the user, and is there a workaround? If so, what is
it?
Workaround: first select index 0, then index 1 before moving

Please provide any additional information below. Attach a screen shot or
log if possible.
The cause seems to be that the items get moved from top to bottom, and when the item that the leadIndex was pointing to gets deleted, the leadIndex is set to -1, instead of being set to the next item that is selected. Further research necessary figure out why the leadIndex gets invalidated in the first place.