*Created by: benfry* The `warnMixedModes` section of the Processing.g4 grammar was breaking autocomplete. (See https://github.com/processing/processing4/issues/491 for that issue) The commit that caused the breakage is https://github.com/processing/processing4/commit/0f9b290398aac86ef56fe3c4e9c3ff88fdd53466 The temporary workaround is in https://github.com/processing/processing4/commit/caf1ba90b63d7c6fbcdfbe0586cf848cb353d1dc This will affect 4.0 beta 9 unless we happen to get a fix before then.