Capture entire page does not

[Pascal666]

For longer pages, the Capture entire page option does not actually capture the entire page. The bottom is missing. Some examples:
http://www.illinoiscourts.gov/SupremeCourt/Rules/Art_III/ArtIII.htm
https://www.bloomberg.com/features/2017-the-ether-thief/

[deanoemcke]

Similar to this issue: #554
For performance (memory) reasons, I have a limit to the length that an screen capture image can be.

[deanoemcke]

Actually, this limit has a practical side too. An image greater than a certain size cannot be converted to a dataUrl which is what i use to store the captured screenshot on disc.