画質が戻らないバグがまた発生しました。エラーメッセージ無し、ランダムの画像で発生　

Hi ​@Masa, Welcome to the Lightroom Community forum! I appreciate your patience. To better help you with this issue, we would like a few more details. Can you send your system info, a screen recording of the issue, and a numbered list of the exact steps needed to replicate it? You can find your system info by going to Help > System Info, copying and pasting it into a text file, and attaching it here.

Meanwhile, you can try manually resetting your Lr Preferences: https://adobe.ly/4o7JADQ

I hope this helps! ^CH