Can't change numbers in info panel

Hello,

I made a film to describe the problem http://youtu.be/shvmNDlBYMo

I cannot change a x value of a node from 208,947 to 209. It looks like those numbers with tiny differences are treated as one value.

It occurs in Glyphs 1 and 2.

I increased the threshold a bit. For now, set it to 210 and then press the arrow down key.