Hi, if you click the "gear" button on the info bar, you can find that option in the "Auto-close and Auto-open" section -- check the box in the parentheses:

[x] Open bar automatically on stand-alone web images ([x] image/webp and image/avif only)

I thought that was the default. [update 3/27/2023: version 1.3.3 sets that as the default, but this is not retroactive to existing installations if you have customized any settings already]