I had a large tree of tabs open in vertical tab mode. I lost the entire tree when I right clicked the tree root and selected a Saved Window to move it to. The Saved Window only showed the root and nothing else. Because the root tab was sensitive to page refreshes as I had unsubmitted data input, I also lost the large amount of input as well.
A tab tree should move to a new window without reloading tabs.
Version 0.99.130.1-beta (WebKit 621.1.2.111.4); macOS 14.7.1 (23H222)
Sonoma (14)