Hi,

When using -pie-background on a large enough element (let's say 100px) I found out that color stops (using pixel units) cannot be inserted at smaller distances than around 10px. when I try, the gradient remains at this apparent minimum value of 10px.

for example:

-pie-background: linear-gradient(top, #d8d8d8, #eeeeee 3px);

renders exactly the same as:

-pie-background: linear-gradient(top, #d8d8d8, #eeeeee 10px);

I guess this is a bug?

Interesting, I'll take a look. If you could open a ticket about it on the GitHub tracker that would be helpful.

PIE has to convert the length values to percentages for use by the VML gradient syntax. It's possible that the VML engine rounds things to the nearest whole percent or something silly like that.