UserAgent: Mozilla/5.0 (X11; CrOS x86_64 8172.47.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.79 Safari/537.36
Platform: 8172.47.0 (Official Build) stable-channel cyan

Steps to reproduce the problem:
1. Use touchscreen to drag and drop on web elements
2. Use touchscreen to highlight words in Google Docs
3. General use of touchscreen

What is the expected behavior?
1. When dragging and dropping files, the target webapp/webpage should be able to detect the file that has been dropped
2. When using Google Docs, double tapping a word should highlight it, a further tap selects the whole paragragh, and the user should be free to go through menus whilst the text is selected
3. Single tap for single click, long tap for right click/drag

What went wrong?
1. Elements are not accepted, when using touchpad, the file is accepted by the target webapp/webpage
2. It is extremely difficult to select a single word, and when selected, as soon as you interact with the font/style menus, the selection is lost. 
3. Very often, a single tap will be registered as a long tap

Did this work before? No 

Chrome version: 51.0.2704.79  Channel: stable
OS Version: 8172.47.0
Flash Version: Shockwave Flash 21.0 r0

It appears that touch is not giving the same fuctionality as using a touchpad and keyboard, often having to revert back to using the R11 in laptop form means that the touch input is far from perfect and needs some tweaks. I'm not entirely sure why ChromeOS differentiates a drag and drop with touchscreen to a drag and drop with the touchpad.