Select the number 7 with the arrow tool. Observe the location of the cursor
Click-drag the selection and closely watch the cursor.
The cursor no longer is in the same relative position. relative to the object selected.
This is particularly annoying when zoomed into the "7".
The precision is necessary for commands that we are implementing that require the cursor position relative to the object selected to be exact.
Re: There is a bug in FF 14,15,16 (I believe all 3) regarding mousedown x/y in an SVG canvas area. Please advise how to report this and have someone fix it.
Not entirely sure I follow your instructions. One thing I do note is the initial starting position of the "7" differs when I compare Firefox (17 or 10) with Chrome. Is that relevant ?
I wonder if part of the difference may be in how differing browsers cope with the code. I am not a developer and do not know how relevant this is but I note if I try the validator http://validator.w3.org/unicorn/ it is returning some errors.
If you do think there is a bug try to make a simple test-case that demonstrates this and post in bugzilla. If this appears to be a regression it would be handy to pin it down at least to a particular Firefox version, although users should not now be using Firefox 6-9. (Drill down from here if you need an old version of Firefox to run tests with)