No error in my logs.
I also loose dynamic album title, dynamic album codeblock.
I use dynamic albums in different sublevel folders.
Here is what I do :
I use different tags,
I search for a tag,
I create a dynamic album from the search results page.
I edit the newly created dynamic album to fill fields.
My test dynamic album was by general word so I tried a specific tag. It should not make any difference, a search is a search. Sadly again I could not reproduce it, all data still there for me… Tested with current 1.6.1 on PHP 8.2 locally.
Please check the permissions on the .alb file.