I have both an iPhone 5s as well as an iPad mini 2. It happens on both when I try to access the html files through Dropbox. I think it may be because a "tap" while using the Dropbox app triggers a hide/show function for the file & folders in Dropbox.

Sorry I did not reply sooner; it might be helpful for you guys to make email notifications the default for users who post in the forums; and let them decide later if they need to unsubscribe from a specific thread. I often forget to "click" on the "Subscribe to Updates" option.

What are the chances that these new features are applied to the version 2.74 of Blender?

For a greater vision, You should post these improvements in this official bf-committer's thread:
http://lists.blender.org/pipermail/bf-committers/2015-February/thread.html