I have three doc windows and a script window open in 16, all from the same FM file. While this wouldn't be typical in a professionally developed end-user environment, it is VERY typical in a development environment.
If I switch away from FM16 to any other program, using the Windows Task Bar to get back to FM16 requires me to select a specific window to go back to. I typically don't remember what I was doing before checking my email or dealing with another problem. I've always relied on FileMaker to manage my windows, to always show me the last-used and other windows automatically when I return to FM. Now I have to remember the last used window AND manually bring each other window to the foreground as well. This is, by the way, very different behavior than found in FM's implementation on the Mac.
So...I just realized there is a "Bring All to Front" option on the Window menu, which might theoretically help with part of the above problem. Clicking on it however seems to do nothing at all. Perhaps this is just mistakenly left over from before 15? Too bad if that's the case. Not only should it work, but it should be the default behavior of FileMaker each time I return to the app, to bring all visible FM windows to the front.
(I've noted a bug above, and I realize the second part of the last paragraph sounds like a feature request. I could add it as such, but it would get ignored because this is a developer issue and most FM developers are on Mac...so I'm just going to leave it here and I hope that FM's engineers take it upon themselves to clean up this absolute mess I feel they've created.)