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I love new features, don't get me wrong, but not at the cost of them cluttering up the UI with features I rarely (or never) use. The sidebar on the web keeps growing with no way to tame it. How about...
If you go to https://www.dropbox.com/home the page is divided into three areas: files in the center and two left and right side bars.
The two side bars take a lot of space such that folder/file names in the center are shortened too much. This is very disturbing. I am using Chrome browser.
I would suggest to develop a solution, e.g. to hide/unhide or resize the two side bars.
In the meanwhile, one is forced to either open a single browser window and resize onto two screens, or reduce the font.
+1 for this along with the facility to have a "wide" document option