Bug 212373
| Summary: | ResizeObserver doesn't trigger for elements with size in viewport values on window zoom | ||
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| Product: | WebKit | Reporter: | Golubov Nikita <neekitkah> |
| Component: | New Bugs | Assignee: | Nobody <webkit-unassigned> |
| Status: | NEW | ||
| Severity: | Normal | CC: | cathiechen, simon.fraser, webkit-bug-importer |
| Priority: | P2 | Keywords: | InRadar |
| Version: | Safari 13 | ||
| Hardware: | Mac | ||
| OS: | macOS 10.15 | ||
| See Also: | https://bugs.webkit.org/show_bug.cgi?id=245656 | ||
Golubov Nikita
1. Make a div with width in vw and height in vh
2. Create ResizeObserver and observe this div
3. Zoom browser window
Showcase: https://jsfiddle.net/yLdvctzx/14/show
Code: https://jsfiddle.net/yLdvctzx/14
Expected behavior:
ResizeObserver should detect resizing of the div and trigger its handler because elements's size in pixels has changed after zoom.
Actual behavior:
ResizeObserver doesn't trigger handler.
In the showcase example you can see that dimensions doesn't update on widnow resize.
Video demonstration: https://monosnap.com/file/WbacIuL2djfoCDiUE8Q5weaH1j1HEL
Chromium has the same issue (https://bugs.chromium.org/p/chromium/issues/detail?id=1086465). Works if FireFox.
| Attachments | ||
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| Add attachment proposed patch, testcase, etc. |
Radar WebKit Bug Importer
<rdar://problem/63653855>
Simon Fraser (smfr)
Does this reproduce in a recent Safari Tech Preview? There have been some fixes in this area.