A new key combo to trigger keyboard switch was introduced in bug 492454 in order to prevent exactly this failure.

tbuckley@ I don't see a bug filed tracking the eventual removal of the old key combos. I know there are other things we need to accomplish first.

If there's already an issue please dupe this one into it.

Making this a general bug for that removing the old shortcuts, which is blocked on remapping settings for other keys.

#4: wait really? which shortcuts are blocked on remapping settings?

alt+shift at least should be removable already.

We're holding off on removing old keyboard shortcuts (Ctrl+Shift+L, Shift+Alt, Shift+Esc) because we moved them all to use Search, which some users have remapped. Given the unsymmetric nature of our existing keyboard mapping settings, it's not possible for these users to access the new shortcuts by remapping a lesser-used key to Search.

Moving this nonessential bug to the next milestone.

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

The deprecated shortcut "Alt+Shift" to switch keyboard layouts has been disabled in the upcoming M-53. "Ctrl+Shift+Space" should be used from now on.

commit	25174475a4ad63208a3dfc0755b4ced719ac2dfd	[log] [tgz]
author	afakhry <afakhry@chromium.org>	Thu Jun 16 20:14:43 2016
committer	Commit bot <commit-bot@chromium.org>	Thu Jun 16 20:16:29 2016
tree	c137aed3ae8187a2f8bb20d68f419d922c31351e
parent	5e31e870bc40f674c3f9bc074f43e5ddd63e3154 [diff]
Disable the deprecated Alt+Shift for NEXT_IME

Due to its many conflicts, we decided to remove it for M-53. We will
keep the notification so as not to confuse users.

R=oshima@chromium.org
BUG= 612990 ,  593633  
TEST=ash_unittests --gtest_filter=DeprecatedAcceleratorTester.*
TEST=ash_unittests --gtest_filter=AcceleratorControllerTest.*

Review-Url: https://codereview.chromium.org/2068333002
Cr-Commit-Position: refs/heads/master@{#400245}

For other deprecated shortcuts that moved to new Search-based accelerators, They will be disabled once work on  issue 608625  has been completed. 

This issue is Pri-1 but has already been moved once. Lowering the priority and moving to the next milestone.

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

Could you guys please provide any revert mechanism for Alt-Shift? 

I've been using this shortcut since 1995 for hundreds of times a day, which is a norm for anyone works daily with a non-latin keyboard. 

And then you suddenly remove it with absolutely no way to change or roll it back. Maybe a Chrome extension or experimental flag. This is a terrible usability regression. 

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1b1e927b139a713c966719345846631e0e72f308

commit 1b1e927b139a713c966719345846631e0e72f308
Author: afakhry <afakhry@chromium.org>
Date: Mon Nov 14 23:06:05 2016

Disable the old lock-screen shortcut

Disbale the shortcut but keeps the notification for another milestone.

BUG= 612990 
TEST=ash_unittests --gtest_filter=AcceleratorControllerTest.*
TEST=ash_unittests --gtest_filter=DeprecatedAcceleratorTester.*

Review-Url: https://codereview.chromium.org/2501123002
Cr-Commit-Position: refs/heads/master@{#431946}

[modify] https://crrev.com/1b1e927b139a713c966719345846631e0e72f308/ash/accelerators/accelerator_controller_unittest.cc
[modify] https://crrev.com/1b1e927b139a713c966719345846631e0e72f308/ash/common/accelerators/accelerator_table.cc
[modify] https://crrev.com/1b1e927b139a713c966719345846631e0e72f308/ash/mus/accelerators/accelerator_controller_unittest.cc

Archiving old bugs that have only received trivial updates for some time.

If you feel this issue should still be addressed, feel free to reopen it or to file a new issue. Thanks!