Kev19,
Personal perspective: It would sure be nice if all the companies around the world would play nice with each other, keeping in mind that they exist only for us, their customer. However, and as unfortunate as it is, that's just not reality. Yes, Apple caused this issue and again while it would be nice if Dropbox, in this case, recognized that and somehow resolved it, I simply do not see it in their future.
The issue exists within the firmware of the Apple device, which of course no one else is privvy to but beyond that, I am starting to believe Apple did this deliberately. Certainly they knew that all we had to to was to install the free Microsoft app on our devices, which they kindly allow via their App store even though Microsoft is in some ways a competitor, and the issue would go away. However, its actually more than that, when we use to open within, say Apples Mail program, we would get a Preview version of the file, not the actual working file. For me, this was enough as I didn't need to actually be in the opened file as the Preview allowed me to copy and paste from it.
However, Preview had its viewing limitations that have now been elimiated by opening the file in its native app. Even if Apple fixes this or changes back to the way it used to be, I will continue to open my password protected files in their native app and I can tell you that it only takes between one and two seconds to do it. All I have really lost is the ability to Preview the file from within the Apple Mail app. Now, I can actually work within the file when I want to so for me, I like the "work around" better now that I have gotten used to it. So stock up on your plastic bags, there is a part of me that says this was a deliberate change and there isn't anything Dropbox, or One Note or Google Drive any other companies hosting server can do about it since it relies upon the Apple devices firmware.
