Additional information: ⌘+] and ⌘+[ work as expected, so it appears to be something to do with the shift key being down

Unable to reproduce the issue on chrome reported version# 69.0.3497.81 using Mac 10.12.6 with steps mentioned below:
1) Launched chrome reported version and changed keyboard language to Japanese
2) Pressed ⌘+shift+{, focus changed to left tab
3) Pressed ⌘+shift+}, focus changed to right tab
4) Pressed ⌘+shift+@, nothing happens

@Reporter: Please find the attached screencast for your reference and let us know if we missed anything in reproducing the issue, provide your feedback on it which help in further triaging it. Try to test this issue by creating new person with no apps and extensions and let us know if the issue still persists.

Thanks!

Deleted: 880683.mp4 1.4 MB

	880683.mp4 1.4 MB View Download

Is your physical keyboard JIS? As in the key to the right of "P" is "@" and the one to the right of that is "["

I also already tried a new person on two different machines and got the same result.

Thank you for providing more feedback. Adding the requester to the cc list.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

I'm apparently not the only one
https://twitter.com/kiyohara/status/1037221626234986497
https://twitter.com/akiroom/status/1037054157230731265

I'm facing the same issue on the same environment as the original reporter. I attach a screenshot. Please note the key left below displayed by Keycastr. Also, shift+@ is equals to ` on Japanese keyboard.

I am so sorry I failed to attach a gif file. I attach mp4 screenshot. Please confirm.

Deleted: tab.mp4 656 KB

	tab.mp4 656 KB View Download

mac triage: over to erikchen@

I unfortunately do not have a japanese keyboard. A similar issue has already been fixed on Canary -- can you check to see if the issue reproduces on Canary?

Also, can you check if <ctr> + <tab> works correctly to move between tabs? 

https://bugs.chromium.org/p/chromium/issues/detail?id=880880#c10

Ctrl+tab works. Does not reproduce in Canary.

The other thread says there is nothing to do but is there any chance of getting a patch release? All Mac users in Japan are going to have to get used to this new US-style shortcut only to have it switched back a few weeks later.

Thanks for confirming that this works in Canary.

Unfortunately, the fix is a bit trickier than I feel comfortable merging back to M69 [which wouldn't see a respin for weeks, anyways]. This will remain broken until M70. :(

OK thanks for the response. Although I don't speak for all Japanese users this is kind of a bummer. I hope there's a test or something in the pipeline to ensure a similar issue doesn't come up again in the future.

When I fixed this bug I added tests:
https://chromium-review.googlesource.com/c/chromium/src/+/1167466/8/chrome/browser/ui/cocoa/nsmenuitem_additions_unittest.mm#283

Unfortunately, I don't have a japanese keyboard so I won't be able to add tests specifically for the Japanese test case, but hopefully the dvorak-qwerty tests should capture the same problem.