Steps to reproduce:
1. Launch chromium/chrome canary
2. Enter history via platform keyboard shortcut (Ctrl+H, Cmd+Y)
3. Press the Tab key repeatedly

Expected results: Items in the history list (the checkbox, the page, the actions) would always be reachable by pressing the Tab key.

Actual results: items in the history list are initially reachable by pressing the Tab key. However, after one cycle of tabbing, the items are removed from the tab order.

Details after entering history initially:
 0. "Search history" (press Tab)
 1. "Chrome history" (press Tab)
 2. "Tabs from other devices" (press Tab)
 3. "Clear browsing data" (press Tab)
 4. checkbox to the left of a time stamp (press Tab)
 5. link for the page in history (press Tab)
 6. "actions"/three-dot popup menu (press Tab)
 7. "view site information" (press Tab)
 8. location/address bar: "chrome://history" (press Tab)

(End of first cycle)

 9. "Search history" (press Tab)
10. "Chrome history" (press Tab)
11. "Tabs from other devices" (press Tab)
12. "Clear browsing data" (press Tab)
13. "view site information" <-- FAILURE, should be the checkbox as above

At this point, Tab cannot be used to return focus to the list of items. This is a drag for people who rely on the keyboard and/or cannot use a mouse.

This problem does NOT occur for me with version 70.0.3538.77 (macOS and Linux).

This problem DOES occur for me in version 72.0.3599.0 (Linux, built locally) and 72.0.3602.0 (macOS, Canary Official Build).