Large decks are now detected correctly in the deck export.
Previously the calculations for where the scroll bar were hard-coded against only two screen ratios, which mean the scroll bar could only be used by the deck export if the screen matched that ratio. Other screen ratios would result in an incomplete deck being detected. There was also a problem with the position on very small screens (1024x768). The calculations have been fixed so that they now work at all ratios and all screen sizes.
Constructing a deck will no longer scroll the deck if you're previously exported a deck.

The deck export popup was not being removed properly when closed, which resulted in it attempt to detect a deck when you construct a deck. This resulted in it scrolling the empty deck just before it is constructed. The popup is now removed correctly so that it doesn't kick in during the deck construction.