Been happening to me since update too and its very very annoying :-( Paste works well, but copy opens DevTools.

Seems that there is a shortcut in devtools: Cmd + Shift + C for "Select node to inspect". Maybe something broke up "shift" and its triggering on cmd+c too?

The same issue... it is a basic and very common command

This issue also affects Incognito Mode for me (Cmd+Shift+N) - it instead opens Normal Window.

Re-open closed tab (Cmd+Shit+T) is also affected.

Chrome Version: 69.0.3453.3 canary (64-bit)
OS version: Mac OS 10.13.5

I also discovered that when clicking into the address field, so the complete address is selected, and then pressing Cmd+Right Arrow or Cmd+Left Arrow moves forward or backwards in history and doesn't jump to the beginning or the end of the selected address.

The same problem
Version: 69.0.3453.3
OS: macOS 10.11.6

Also duplicated in: 851257

Please, increase the priority of this bug.

I don't see this issue happening on -
Chromium	69.0.3454.0 (Developer Build) (64-bit)
Revision	b36fc1a5eb44e60d74ee1df1abaf7e98a31f41ae-refs/heads/master@{#565873}
OS	Mac OS X
JavaScript	V8 6.9.107

Perhaps it's fixed already?

same here on canary macos 10.13.5 Version 69.0.3453.3 (Official Build) canary (64-bit)

This should be fixed by: https://chromium-review.googlesource.com/c/chromium/src/+/1093301

Which will be present in the next Canary after 69.0.3453.3.

Merging into  bug 850895 .

Sorry, I'm new to here. Is there any way we can manually fix this from the link in comment 13, or we just wait for the next Canary update release to fix it?

Sorry, there's no easy local fix.

Same issue here! I'm using Chrome Canary on Mac too. 
Please fix this soon. 
Not able to copy and paste is so annoying :( 

We've pushed out a new version of Chrome. Please try updating.

works for me now thanks for the fix using 
Version 69.0.3455.0 (Official Build) canary (64-bit)

works for me too. Version 69.0.3455.0 (Official Build) canary (64-bit).
Thank you!!