Integral sign cropped in Cauchy's formula MathML Chrome 400% zoom

[DominicCronin]

Google Chrome 19.0.1084.46 m running on Windows 7
http://www.mathjax.org/demos/mathml-samples/
Zoom the browser to 400% and view Cauchy's integral formula (note: slightly larger or smaller zooms look OK)
The Integral sign is clipped off on the right, and the f is also missing a bit on the right

[DominicCronin]

I had a screenshot for you, but I couldn't find how to upload it to your issue tracker.

[dpvc]

I am not able to reproduce the results. Did you have this problem after scrolling the page? Chrome does have some refresh issues if you scroll math onto the page. Each character has a bounding box, but the glyphs are allowed to extend over those boxes. It appears that Chrome only refreshes the area inside the character bounding box, leaving off the parts that fall outside. The integral sign, in particular, extends quite a bit over its bounding box (which is only about half as wide as the integral sign itself), and the lower-case "f" also extends over is box slightly at the top. I suspect you are seeing this effect. Unfortunately, there is not much MathJax can do about that. If you select and unselect the text, that might cause it to rerender properly.

I don't think this is restricted to 400%, but can occur any time you scroll. If you adjusted the scaling when the integral was visible and didn't scroll, that might be why you didn't see the effect at the other scalings. Also, I think it only appears in the case where a glyph is partially on screen and partly off (when it scrolls on it is not fully rerendered). That occurs more frequently at higher magnifications.

Davide

[fred-wang]

I've been able to reproduce this issue and open a bug on Webkit bug tracker:

https://bugs.webkit.org/show_bug.cgi?id=108465

a screenshot:

https://bug-108465-attachments.webkit.org/attachment.cgi?id=185756

[pkra]

On Chrome 36, I see this only and now at 500%. Not sure if marking this as "abandoned" is appropriate.

[pkra]

Seems to have been fixed in WebKit as well.