Email Link Pops Up Accounts Page

Using a Nexus 5X with 8.1.0.

When I click on a link in an email (using Blue Mail) a Google Account page pops up in Chrome. If I press the Back Arrow at the top of the page, it shows the page that was supposed to be displayed. This hasn't always happened but not sure how many months ago it started. The account page looks roughly like this:

Signed in to Google as
[email protected]
+ Add account
Sync
Google Activity Controls

Sign out of Chrome

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