Chrome: 71.0.3567.0 Dev

Steps to repro:
# With Chromevox enabled (ctrl+alt+z), open Calculator
# Tab around the calculator and notice which items are in the tab order
# Enter a few equations without clearing the calculator such as 1+1 and 2+2
# Tab around again and notice that each element of all equations in history are now in the tab order

Expected: A more dynamic way of navigating history and calculator via keyboard

Actual: Each equation will force keyboard users to press the tab key more times than necessary