Chrome version 68.0.3415.0 (Official Build) canary (64-bit)
Chrome version 66.0.3359.27 (Official Build) dev (64-bit)
NVDA version 2018.1.1
JAWS version 2018.1804.26 ILM 
Windows Version 1709 (OS Build 16299.371)


Steps to reproduce:
1. Launch a screen reader (JAWS  or NVDA)
2. Launch Chrome Canary, and another application e.g notepad.
3. In Chrome, load a webpage such as gmail.com.
4. Press alt+tab to swhich to the other aplication. Release both keys, then press alt tab again to switch back to Chrome.
Expected result: Screen reader should announce The title of webpage, followed by Google Chrome Canary.
Note: There is a separate bug where the screen reader announces Canary after alt+tab keys are released.
Actual result: screen reader announces "Untitled-Google Chrome"
Both JAWS and NVDA produce the same result.
Reproduces in Canary, does not reproduce in dev.