niceSprite

Thank you for saving my time! I did change this preference for get dark menu bar in light mode. Then I decided to use default, but the article guided me use command defaults write -g NSRequiresAquaSystemAppearance -bool No to undo the preference, and thus cause the problem.

@Andrew Hi, I had the same problem. I don't know exactly when my Alfred lost transparency, but it must be related to some of my preference changes. After changing to a new created macOS user account, I open Alfred and found the transparency is normal. Can Alfred team locate the problem and fix it? Maybe I need to change to a new macOS user to make my Alfred appearance normal. Model Name: MacBook Pro Model Identifier: MacBookPro15,2 Processor Name: Intel Core i5 Processor Speed: 2.3 GHz Number of Processors: 1 Total Number of Cores: 4 L2 Cache (per Core): 256 KB L3 Cache: 6 MB Memory: 16 GB