Thumbnail CTR dropped after YouTube changed layout – need advice on new design

I feel your pain! I went through the same thing when they rolled out that layout change. The key is that the title now takes up about 30% more visual space, so your thumbnail doesn't need to carry the entire message. Instead of cramming text, focus on a single strong visual element that complements the title. For example, if your video is about a smartphone, show the phone with a unique lighting effect that matches the title's promise. Also, check your YouTube Studio analytics to see if your impressions are still the same—if impressions dropped, it's not just CTR, it's the algorithm favoring different thumbnails. I would recommend doing a thumbnail A/B test using the 'Test & Compare' feature (up to 3 thumbnails) on your next upload. Let the test run for at least 7 days or until you reach 10,000 impressions, then pick the winner. My CTR jumped back to 5% after I simplified my thumbnails to have just one subject and no text.

Thanks vlogflow85 for the advice! I followed your suggestion and ran an A/B test on my latest video. I made one thumbnail with just the product on a clean background and another with my old style but with less text. The minimal one won with a 4.8% CTR compared to 2.1% for the old style. I've now switched to a new template with a single focal point and no text, and my last three videos are back to 5-6% CTR. The key was indeed letting the title do the talking. I've also started using higher contrast and a subtle vignette to make the subject pop in the smaller size. Thanks for the help!