Google Chrome	70.0.3538.76 (Official Build) (64-bit)
Revision	22757df8a5ddfacf2eaf57b85f4ea54c14b8f87a-refs/branch-heads/3538@{#1031}
Platform	11021.56.0 (Official Build) stable-channel chell
Firmware Version	Google_Chell.7820.315.2
ARC	5081697
JavaScript	V8 7.0.276.31
Flash	31.0.0.122 /opt/google/chrome/pepper/libpepflashplayer.so
User Agent	Mozilla/5.0 (X11; CrOS x86_64 11021.56.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.76 Safari/537.36

URLs (if applicable) : https://www.amazon.com/Microsoft-D58-00026-Intellimouse-Optical-Mouse/dp/B00005TQ08


If you plug this mouse in, both mouse and trackpad control break immediately.  You can no longer select existing tabs in the Chrome browser (but you can open new ones) and you can only enter a URL into a tab once.  This is true even of the trackpad if a mouse is plugged in.  If you unplug the mouse, the trackpad immediately begins working properly again.

You can select as normal within the webpage proper.  Only the tabs are affected.

This is new behavior as of the last week or so on my Google provided work chromebook.