I saw that as well. But this is not easily fixable, as this didn't happen because the icon is smaller now, but because Andi also changed the padding on purpose as he thought it was too wide.
So, the question is: Either revert to the "too wide" padding or make it more consistent across all icons.
The main problem is that all the icons are different and look individually better with different padding. But when put together that individual padding makes it inconsistent and look bad. So, it's really bad either way...
I did some improvements in 15f8c902 See attached screenshot for how it looks now. I don't think we can do any better than this.
I personally feel the bottom case (icons within normal text flow) should be optimised and not so much the top case (icons at the same spot in a list). Because the bottom case is much more common than the top case. There are a few cases where the icon is too close (the fourth [is that media?] and splitbrain) and others where it is too far away (wikipedia and paypal). But it's not too bad and I would be fine with your changes.