For the last couple of months I've been using the Dolphin browser (the old version) workaround to run Skritter/Flash on Android and, as others have noted, it is exTREMely quirky and the worst problem, by far, is that it keeps skipping cards.

Well, I've found a dead simple solution: when you use any of the buttons in the bottom two rows (i.e. Back, Forward, Correct row or the Know/Don't Know row) DON'T TAP, PRESS the button. If I hold it long enough for the button to change color it seems to work almost perfectly. It's not 100% but the improvement is pretty dramatic.

This could be just a quirk of my phone (original Samsung Galaxy S running a recent Cyanogenmod) but if you're having trouble with Skritter/Dolphin it might be worth a try.