Environment

• Package version(s): Blueprint table 3.8.1
• Browser and OS versions: Chrome

If possible, link to a minimal repro (fork this code sandbox): https://codesandbox.io/s/blueprint-sandbox-hiwri

Steps to reproduce

1. Use tab key to move focus into blueprint table

Actual behavior

It's not possible to move focus out of the table using the keyboard - as demonstrated in repo above, once focus is in the table you cannot tab to either button on the page

Expected behavior

You should be able to tab back to the previous or onto the next element on the page.