Thanks for the review and the feedback! You might want to consider using the popup view instead if you want a way to pop open Tab Stash quickly just to check on something. You can enable it in Tab Stash's settings.

You can use both the sidebar and the pop-up view at the same time if you like—just use Firefox's built-in "Sidebar" button to open/close the sidebar, and switch Tab Stash to show the popup view when the Tab Stash button is clicked. Hope this helps!