Name Description Size
absolute-child-shift-with-parent-contain.html Layout Instability: parent and contained absolute child moved together 1134
absolute-child-shift-with-parent-negative-overflow.html Layout Instability: parent and overflowing absolute child moved together 1196
absolute-child-shift-with-parent-overflow.html Layout Instability: parent and overflowing absolute child moved together 1169
absolute-child-shift-with-parent-will-change.html Layout Instability: parent and overflowing absolute child moved together 1193
add-remove-position-fixed.html Layout Instability: no shift for adding/removing position:fixed 1029
add-remove-position-sticky.html Layout Instability: no shift for adding/removing position:sticky 865
body-display-change.html Layout Instability: shift accompanied by body display change 1180
buffer-layout-shift.html Layout Instability entries are not available via the performance timeline 2041
buffered-flag.html Layout Instability: PerformanceObserver sees entries with buffered flag 1759
child-shift-with-parent-overflow-hidden.html Layout Instability: parent (with overflow:hidden) and child moved together 1173
child-shift-with-parent-overflow-x-clip.html Layout Instability: parent/child moved together with overflow-x: clip 1089
child-shift-with-parent.html Layout Instability: parent/child moved together 994
clip-negative-bottom-margin.html Layout Instability: clip with negative bottom margin 1020
composited-element-movement.html Layout Instability: element with compositing layer hint 1387
contain-paint-fully-clipped.html Layout Instability: fully clipped by contain:paint 920
content-visibility-auto-offscreen.html Layout Instability: off-screen content-visibility:auto content 1585
content-visibility-auto-onscreen.html Layout Instability: on-screen content-visibility:auto content 868
content-visibility-auto-resize.html Layout Instability: resizing content-visibility:auto content 944
content-visibility-hidden.html Layout Instability: content-visibility:hidden content 862
display-change-with-transform.html Layout Instability: change display type with transform 762
expand-above-viewport.html Layout Instability: layout shift when content expanded above the viewport 1615
fixed-position-move.html Layout Instability: movement of fixed position 900
fully-clipped-visual-rect.html Layout Instability: fully clipped visual rect 891
idlharness.html Layout Instability IDL tests 1814
ignore-fixed-and-sticky.html Layout Instability: ignore fixed and sticky positioning 1234
inline-flow-shift-one-line.html Layout Instability: inline/text movement is detected 1526
inline-flow-shift-vertical-rl.html Layout Instability: vertical-rl inline/text movement is detected 1602
inline-flow-shift.html Layout Instability: inline/text movement is detected 1530
input-timestamp.html Layout Instability: observe timestamp after user input 2643
local-shift-without-viewport-shift-2.html Layout Instability: local shift without viewport shift 931
local-shift-without-viewport-shift.html Layout Instability: local shift without viewport shift 942
main-frame.html Layout Instability: subframe layout shift score 1475
META.yml 102
mousemove-becomes-drag.html Layout Instability: no shift in mouse moves with a button pressed 1836
move-distance-clamped.html Layout Instability: distance fraction not more than 1.0 1489
move-transformed.html Layout Instability: shift of a transformed container 886
multi-clip-visual-rect.html Layout Instability: multi clip visual rect 1200
multicol-000.html 717
multicol-001.html 1042
opacity-nonzero-to-zero.html Layout Instability: opacity:0 798
opacity-zero-layout-and-visible.html Layout Instability: opacity:0 1023
opacity-zero.html Layout Instability: opacity:0 1055
outline.html Layout Instability: outline doesn't contribute to layout shift 749
partially-clipped-visual-rect.html Layout Instability: partially clipped visual rect 967
pointerdown-becomes-scroll.html Layout Instability: shift in pointerdown becoming scroll 1866
pointerdown-becomes-tap.html Layout Instability: shift in pointerdown becoming tap 1743
pointermove-becomes-drag.html Layout Instability: no shift in pointerdown becoming dragging 2065
recent-input.html Layout Instability: observe after user input 2497
resources
rtl-distance.html Layout Instability: movement distance uses starting corner 995
shift-into-viewport-inline-direction-and-scroll.html Layout Instability: shift into viewport in inline direction with scroll 930
shift-into-viewport-inline-direction.html Layout Instability: shift into viewport in inline direction 815
shift-into-viewport.html Layout Instability: shift into viewport 1054
shift-invisible.html Layout Instability: shift of invisible element not counted 703
shift-outside-viewport-inline-direction.html Layout Instability: shift out of viewport in inline direction 808
shift-outside-viewport.html Layout Instability: shift outside viewport 950
shift-scroll-anchoring-natural-scroll.html Layout Instability: shift offscreen with scroll anchoring and natural scroll 1566
shift-while-scrolled.html Layout Instability: shift while scrolled 1075
shift-with-counter-scroll-and-transform.html Layout Instability: shift with counter scroll and transform not counted 1542
shift-with-counter-scroll-and-translate.html Layout Instability: shift with counter scroll and translate not counted 1522
shift-with-counterscroll-2.html Layout Instability: shift with counterscroll not counted, with 2 scrollers 1413
shift-with-counterscroll.html Layout Instability: shift with counterscroll not counted 1094
shift-with-overflow-status-change.html Layout Instability: change under overflow clipping container causing shift and overflow status change at the same time 1290
simple-block-movement.html Layout Instability: simple block movement is detected 1050
sources-enclosure.html Layout Instability: source attribution with redundant enclosure 1719
sources-maximpact.html Layout Instability: source attribution prioritization 1735
sources.html Layout Instability: sources attribute 1126
sticky-descendant-move.html Layout Instability: movement of descendant of sticky positioned 1050
sticky-layout-no-change.html Layout Instability: sticky positioned layout no change 899
sub-frame.html 1197
supported-layout-type.html PerformanceObserver.supportedEntryTypes contains "layout-shift" 717
toJSON.html Layout Instability: toJSON 1466
transform-above-filter-dynamic.html Layout Instability: addition of scale transform above filter 779
transform-above-perspective-dynamic.html Layout Instability: addition of transform above perspective 754
transform-change.html Layout Instability: no layout shift for transform change 1147
transform-counter-layout-shift.html Layout Instability: no layout shift if transform change counters location change 1292
transform.html Layout Instability: shift inside a transformed container 1100
translate-change.html Layout Instability: no layout shift for change of individual transform property 1150
translate-counter-layout-shift.html Layout Instability: no layout shift if translate change counters location change 1272
video.html Layout Instability: no shifts from advancing video track 1062
visibility-hidden-layout-and-visible.html Layout Instability: visibility:hidden change with layout 1124
visibility-hidden.html Layout Instability: visibility:hidden 845
visible-to-hidden.html Layout Instability: visibility:hidden 889