css3 - Glitches with cross-browser CSS support for 100% transform translate animation movement -


i've dug out old piece of js code wrote thought i'd put online free use, , i've found 1 css animation rendering issue stumped me 3 years ago still acting today.

it involves animating element left:100%/transform: translatex(100%) or top:100%/translatey(100%) 0, from off right or bottom of parent element origin.

i've been testing in google chrome on mac os x (47.0.2526.111) , glitchy rendering occurring, visible in example: https://jsfiddle.net/lvl99/g29o0005/

the glitch shifts transitioning element origin position, animates off screen jump origin position.

back when debugging issue posted question here , working solution change 100% value 92.5% in css. works left/translatex values, not top/translatey values.

one interesting aspect glitch rendering negative values origin has no issue, i.e. left:-100%/transform:translatex(-100%) , top:-100%/transform:translatey(-100%) seem render (from off top or left of parent element origin no jumping).

i tested google chrome on ipad , latest version of google chrome canary , rendering issues seem resolved. i've tested mozilla firefox (43.0.4) , safari (8.0.8 (10600.8.9)) on computer seem render faithfully, 3d , card transition styles there layering issues (could z-index or transform-style: preserve-3d issue?)

i have old macbook pro (mid-2009) perhaps it's graphics card. wondering if else has had similar rendering issues or experience off-screen elements animating. i've utilised backface-visibility: hidden aid other rendering issues.

since google chrome canary renders lot better, i'm hoping resolved in regular build of google chrome, cross-browser across many older versions beneficial find out means have non-jumpy rendering.

i have new mac computer , revisiting issue on year later see google chrome seems play nicely now. may have been old 7 year old mac's graphics card issue!


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