diff --git a/css/css-transitions/all-with-discrete.tentative.html b/css/css-transitions/all-with-discrete.tentative.html
deleted file mode 100644
index f12c14e4c55285..00000000000000
--- a/css/css-transitions/all-with-discrete.tentative.html
+++ /dev/null
@@ -1,51 +0,0 @@
-<!DOCTYPE html>
-<link rel=author href="mailto:jarhar@chromium.org">
-<link rel=help href="https://github.com/w3c/csswg-drafts/issues/4441">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-
-<div id=target1 class=target>hello</div>
-<div id=target2 class=target>hello</div>
-
-<style>
-.target {
-  float: left;
-  width: 100px;
-  height: 100px;
-}
-.target.animated {
-  float: right;
-}
-
-#target1 {
-  transition: all 1s, float 1s;
-}
-
-#target2 {
-  transition: all 1s;
-}
-</style>
-
-<script>
-promise_test(async () => {
-  let transitionstartFired = false;
-  target1.addEventListener('transitionstart', () => {
-    transitionstartFired = true;
-  });
-  await new Promise(resolve => requestAnimationFrame(resolve));
-  target1.classList.add('animated');
-  await new Promise(resolve => requestAnimationFrame(resolve));
-  assert_true(transitionstartFired);
-}, 'all with an explicit discrete property should animate.');
-
-promise_test(async () => {
-  let transitionstartFired = false;
-  target2.addEventListener('transitionstart', () => {
-    transitionstartFired = true;
-  });
-  await new Promise(resolve => requestAnimationFrame(resolve));
-  target2.classList.add('animated');
-  await new Promise(resolve => requestAnimationFrame(resolve));
-  assert_false(transitionstartFired);
-}, 'all without an explicit discrete property should not animate.');
-</script>
diff --git a/css/css-transitions/display-none-no-animations.html b/css/css-transitions/display-none-no-animations.html
deleted file mode 100644
index 32535baf9c7b1a..00000000000000
--- a/css/css-transitions/display-none-no-animations.html
+++ /dev/null
@@ -1,28 +0,0 @@
-<!DOCTYPE html>
-<link rel=help href="mailto:jarhar@chromium.org">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-
-<div id=target>target</div>
-<style>
-#target {
-  display: none;
-  transition: 1s;
-  color: red;
-}
-#target.animated {
-  transition: 1s;
-  color: green;
-}
-</style>
-
-<script>
-test(() => {
-  target.addEventListener('transitionstart', () => {
-    assert_unreached('transitionstart should not be fired.');
-  });
-  target.classList.add('animated');
-  assert_equals(target.getAnimations().length, 0,
-    'There should not be any animations running.');
-}, 'Transitions and animations should not occur on display:none elements.');
-</script>
diff --git a/css/motion/animation/offset-interpolation.html b/css/motion/animation/offset-interpolation.html
index 9c3747185dc830..2ee011bd77a975 100644
--- a/css/motion/animation/offset-interpolation.html
+++ b/css/motion/animation/offset-interpolation.html
@@ -15,9 +15,9 @@
         to: 'path("M0 300H 700 Z") 600px 900deg',
         method: 'CSS Transitions',
       }, [
-        {at: -0.3, expect: 'path("M0 200H 700") 470px 770deg'},
-        {at: 0, expect: 'path("M0 200H 700") 500px 800deg'},
-        {at: 0.3, expect: 'path("M0 200H 700") 530px 830deg'},
+        {at: -0.3, expect: 'path("M0 300H 700 Z") 470px 770deg'},
+        {at: 0, expect: 'path("M0 300H 700 Z") 500px 800deg'},
+        {at: 0.3, expect: 'path("M0 300H 700 Z") 530px 830deg'},
         {at: 0.6, expect: 'path("M0 300H 700 Z") 560px 860deg'},
         {at: 1, expect: 'path("M0 300H 700 Z") 600px 900deg'},
         {at: 1.5, expect: 'path("M0 300H 700 Z") 650px 950deg'},
@@ -29,9 +29,9 @@
         to: 'path("M0 0H 300") 600px 0deg',
         method: 'CSS Transitions',
       }, [
-        {at: -0.3, expect: 'path("M0 0H 170") 470px auto 0deg'},
-        {at: 0, expect: 'path("M0 0H 200") 500px auto 0deg'},
-        {at: 0.3, expect: 'path("M0 0H 230") 530px auto 0deg'},
+        {at: -0.3, expect: 'path("M0 0H 170") 470px 0deg'},
+        {at: 0, expect: 'path("M0 0H 200") 500px 0deg'},
+        {at: 0.3, expect: 'path("M0 0H 230") 530px 0deg'},
         {at: 0.6, expect: 'path("M0 0H 260") 560px 0deg'},
         {at: 1, expect: 'path("M0 0H 300") 600px 0deg'},
         {at: 1.5, expect: 'path("M0 0H 350") 650px 0deg'},
diff --git a/css/support/interpolation-testcommon.js b/css/support/interpolation-testcommon.js
index 283a2d8aaba888..aa8239ae928654 100644
--- a/css/support/interpolation-testcommon.js
+++ b/css/support/interpolation-testcommon.js
@@ -56,7 +56,7 @@
       target.style.setProperty(property, isNeutralKeyframe(from) ? '' : from);
     },
     nonInterpolationExpectations: function(from, to) {
-      return expectFlip(from, to, 0.5);
+      return expectFlip(from, to, -Infinity);
     },
     notAnimatableExpectations: function(from, to, underlying) {
       return expectFlip(from, to, -Infinity);
