Please disregard below - I have joined the TB Beta group discussion and found this link regarding my issue, but I have yet to figure out how to make the like changes which user HS6666 was able to perform. I welcome anyone that can share this steps. https://thunderbird.topicbox.com/groups/beta/Tc91f881568f3af8e/large-empty-area-at-the-top I may have been 2 patches down level. 3/16/2023 last night around 7pm (EST) Thunderbird Beta was acting very strange, I rebooted my PC but didn't start Thunderbird until this morning 3/17/2023. I quickly noticed the UI looked completed different - my custom menu (not sure correct name) was no longer present. See attachment where I did attempt to customize the Toolbar, also notice the search bar is at same bar, I don't recall ever have a prior "search" area, I would using use the (edit>find>search messages). I attempted to recreate them (Print, Mark, Get Message), but I don't recall each custom change I made prior. The new UI looks WAY different - I'm not pleased that I have to relearn everything, I read on "Changes" for 112.0b1 that some fixes for Various Unified Toolbar improvements and Various visual and UX improvements were "Fixed" but I without reading each note to figure out what I need to do to get the UI close to what it looked like before - I am posting this issue with hopes others can advise me and if they too have had this issue. Thanks in advance - Jim - How do I get them back as before?