User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:52.0) Gecko/20100101 Firefox/52.0 Build ID: 20100101 Steps to reproduce: Example from CodePen ---- 1. Create a new Pen 2. Enter some code into the HTML box 3. Use keyboard shortcut Cmd+A to select all text Example from Google Docs ---- 1. Create a new document 2. Enter some text into the document 3. Use keyboard shortcut Cmd+Z to undo the text entry Actual results: Example from CodePen ---- Nothing - no text is selected. Edit > Select all context menu item is also disabled. Right-clicking into the HTML entry box gives the option to Select all, which functions correctly. Example from Google Docs ---- The 'z' character is entered instead of undoing the text entry. Using the Edit > Undo context menu item works correctly. While Cmd+Z does not work, somehow the shortcut Ctrl+Z does work. Expected results: Example from CodePen ---- All text within the HTML box should have been selected. This works in previous versions of Firefox. Example from Google Docs ---- Text entry should have been undone. This works in previous versions of Firefox.
Component: Untriaged → Layout: Form Controls
OS: Unspecified → Mac OS X
Product: Firefox → Core
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