Browser bugs

Chrome

• Overlapping letters disappear on GPU-canvas http://code.google.com/p/chromium/issues/detail?id=86621
• slow rendering time on GPU-canvas http://code.google.com/p/chromium/issues/detail?id=86287
• rotated text non-uniform font-weight http://code.google.com/p/chromium/issues/detail?id=85984
• rewrite Font::drawGlyphs for Skia on Chrome ports https://bugs.webkit.org/show_bug.cgi?id=62989
• Skia vertex buffer cache is missing frequently http://code.google.com/p/chromium/issues/detail?id=86490
• WONTFIX antialiased paths are overtesselated in Skia http://code.google.com/p/chromium/issues/detail?id=86488
• FIXED broken antialiasing http://code.google.com/p/chromium/issues/detail?id=85762
• FIXED webkit - text opacity https://bugs.webkit.org/show_bug.cgi?id=62988
• FIXED text opacity http://code.google.com/p/chromium/issues/detail?id=85725

Safari / Windows

Looks like Safari doesn't have public bug tracker. To send another, select "Report to Apple" in browser menu. If you have an apple dev account (even free), bugs can be reported to bugreport.apple.com

• rotated text non-uniform font-weight (test case) http://osmosnimki.ru/kothic/text-rotate

Safari / Mac

• Purple area labels are not rendered semi-transparent.

Opera / Windows

Opera doesn't seem to have public bug tracker. To report a problem with a web site, go to Menu - Help - Report a Site Problem.

• Opera 11.5 labs with OpenGL acceleration (build 24661) - broken canvas antialiasing;
• Opera 11.5 beta build 1040 - text for some labels is blurry.

Firefox

• Slow text rendering https://bugzilla.mozilla.org/show_bug.cgi?id=527386

Internet Explorer 10

• bad charset (cp1251 instead of utf-8) https://connect.microsoft.com/IE/feedback/details/676961/kothic-org-js-wrong-map-character-set-if-tiles-served-from-cache

Test cases

Want to check whether your browser has one of those issues?

• canvas rotated text non-uniform font-weight test case http://osmosnimki.ru/kothic/text-rotate
• non-canvas webkit-only rotated text non-uniform font-weight test case http://osmosnimki.ru/kothic/text-rotate-nocanvas
• globalAlpha based text opacity http://osmosnimki.ru/kothic/text-opacity