Today I've tried to minimum the margin setting on my H2O, and noticed that if I make a long press on the words located in the right edge, it would be selected without showing the right-hand side 'nail', thus without word definition shown.
The firmware is unmodified. Did anyone have the same issue?
Also, I would like to know if there is a way to change the font used by the dictionary to fix bunch of unrendered characters.