7.3 Applications Menu shortcut "CTRL+ Shift + M" conflicts with Firefox and Chrome native shortcuts

Issue

• The new Applications Menu on 7.3 DXP can be toogled with the keyboard shortcut CTRL+Shift+M, however, when not logged into Liferay, the same shortcut natively toggles the Responsive Design Mode in Mozilla Firefox and the User Profile Selection popup on Google Chrome/Microsoft Edge (Chromium).

Environment

• Liferay DXP 7.3
• Mozilla Firefox
• Google Chrome
• Microsoft Edge (chromium-based)

Resolution

• Although this represents a usability issue, changes related to shortcuts must be carefully analyzed because they may override the browser's default behavior: this might not be standardized across browsers.
• To plan the change for upcoming versions and have a full regression testing, Liferay raised a Feature Request as a tracker: https://issues.liferay.com/browse/LPS-124225