845543 - no exact position of css-sprites

Status: NEW

(Core :: Layout: Floats, defect)

Description

[r.rudolph]

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:19.0) Gecko/20100101 Firefox/19.0
Build ID: 20130218165301

Steps to reproduce:

- visit for example: http://learnwebcode.com/tutorial-files/css-sprites-tutorial/
- make the font size normal (CTRL and 0)
- now increase the font size (CTRL and +)


Actual results:

if you go with the mouse over the letter, the letter is moving, just a little bit


Expected results:

it should not move at all (in the normal font size it is not moving); using single pictures instead of css-sprites there is no move in any kind of font size

Comment 1

[Cork]

Attachment: testcase image

Comment 2

[Cork]

Attachment: reduced testcase

Alternative STR:
1. Load the testcase image (attachment 718867 [details])
2. Set zoom level to 1.1 (normally ctrl + + from reset state)
3. Compare the letter on pixel row 16 and row 81

Actual results:
The two letters re-size differently

Expected results:
The bottom letter has moved down a bit

By the fact that the re-size factor is 1.1 i think this is expected, but I'm leaving this for someone else to call

Comment 3

[Loic]

Same issue old version with Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2a1pre) Gecko/20090218 Minefield/3.2a1pre

So likely old bug (or dupe).

Comment 4

[r.rudolph]

It is not a dupe. You can take any kind of website that uses css-sprites where pictures are above each other.

Next example:
http://www.thedotproduct.org/experiments/css-sprites/

Double the font size (CTRL and two times +) and see how the words are moving upwards when you move the mouse over the words (specially the word "Products").

Comment 5

[Florian Bender]

Confirmed on Fx 26b3 / Mac.