diff --git a/ui/testem.js b/ui/testem.js
index b659dc7622..a2eed39878 100644
--- a/ui/testem.js
+++ b/ui/testem.js
@@ -22,11 +22,18 @@ module.exports = {
         process.env.CI ? '--no-sandbox' : null,
         '--headless=new',
         '--disable-dev-shm-usage',
-        '--disable-software-rasterizer',
         '--disable-search-engine-choice-screen', // needed from Chrome 127
         '--mute-audio',
         '--remote-debugging-port=0',
         '--window-size=1440,900',
+        // Chrome for Testing as of 146.0.7680.31 in early March 2026
+        // crashes on Ubuntu in containers (which is what we run in CI)
+        // Disabling this feature seems to fix the issue, but we should keep an
+        // eye on it and remove this flag once it's fixed in Chrome.
+        // https://issues.chromium.org/issues/489314676
+        // https://github.com/puppeteer/puppeteer/pull/14744
+        // https://github.com/puppeteer/puppeteer/issues/14742
+        '--disable-features=PartitionAllocSchedulerLoopQuarantineTaskControlledPurge',
       ].filter(Boolean),
     },
     Firefox: {