SymptomMy Mac suddenly shows double quote character " when I type option+u in VS code to switch words to upper case. ReasonEnglish keyboard includes special character set. SolutionRemove English keyboard and add Unicode Hex Input keyboard instead. Referencehttps://stackoverflow.com/questions/60870113/mac-generating-∆˚¬-characters-instead-of-executing-vscode-shortcuts-that-involve How to type Æ, €, #, @, © and more