In Layout: I really hate what you did to the select tool.
Mac OS 10.6.8
In Layout: I really hate what you did to the select tool. If I make a border (a border with no fill), I can no longer select individual fields within the border without selecting the border. If I have several fields layered on top of each other, I can't select them separately like before. If I lock a field or border, I can no longer sweep across to select the unlocked parts. I've been using FileMaker since 1984. This is the worst version yet. Editing used to be easier.
Also, your decision (version 11) to put a space between the body and the footer that requires me to 'option drag' in order to overlay the body and the footer to eliminate white space was really stupid.
I have found I need to keep my Version 11 files, edit them, then resave as a version 12. What a pain in the ass.
I can no longer select individual fields within the border without selecting the border.
This won't solve all your frustrations but if you hold down the control key while dragging your selection box you get the same selection behavior as FileMaker 11 and older--the entire object must be enclosed by the selection box before it can be selected.