Which views/layouts do you have enabled? And which item isn't working/missing?

My issue is not related to inaility to use the program. My issue is that the redesign of the home screen did nothing for performance. You just moved things around on the screen causing a new learning curve to find where you moved things. As I said CHANGE FOR THE SAKE OF CHANGE is a waste of developer time. If you are not improving performance or adding a new function there is not reason to FIX WHAT AINT BROKE. I worked in IT for 47 years in every aspect and area, computer operator, JCL expert, auto-scheduling, programming (COBOL, PL1, ASIST, SQL, SQL Server), Mainframe, web based design and documentation, etc. I never wasted time making things "prettier".

https://blog.thunderbird.net/category/thunderbird/ in case you want to see some background.

I've worked in IT for 43 years with all kinds of hardware and software (most of the items you cite), so I well understand concern about change for change sake. In this situation, it's not gratuitous change. It's ground up rewriting so that in future months and years we can move to the next steps of building more power, performance and capabilities into the product. Without version 115's changes this would not be possible.