Change Details

Merged patch: https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Popups/+/643264 Risks: The change should have make no visual difference but given it concerns the calculations for the positioning of the page previews we should do a general QA checking positioning of different page previews for any anomalities # Commit message in full Reduce layout/style thrashing by measuring all required geometries at event handler, not waiting for delays/redux/style changes. Use CSS bottom instead of top, to avoid having to measure the popup before positioning it, if it's placed above the link ("flippedY"). Disable some test cases that relied on implementation detail of using "top" CSS.

Merged patch: https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Popups/+/644054 Risks: The change should have make no visual difference. # Commit message in full Reduce layout/style thrashing by measuring all required geometries at event handler, not waiting for delays/redux/style changes. Use CSS bottom instead of top, to avoid having to measure the popup before positioning it, if it's placed above the link ("flippedY"). Disable some test cases that relied on implementation detail of using "top" CSS. # QA steps [] When JS is disabled a browser-based tooltip should display on hover. [] When page previews is disabled a browser-based tooltip should display on hover. [] the browser-based tooltip should not display on hover when page previews is enabled

Merged patch: https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Popups/+/6432644054 Risks: The change should have make no visual difference but given it concerns the calculations for the positioning of the page previews we should do a general QA checking positioning of different page previews for any anomalities. # Commit message in full Reduce layout/style thrashing by measuring all required geometries at event handler, not waiting for delays/redux/style changes. Use CSS bottom instead of top, to avoid having to measure the popup before positioning it, if it's placed above the link ("flippedY"). Disable some test cases that relied on implementation detail of using "top" CSS. # QA steps [] When JS is disabled a browser-based tooltip should display on hover. [] When page previews is disabled a browser-based tooltip should display on hover. [] the browser-based tooltip should not display on hover when page previews is enabled