diff --git a/tests/ui/cypress/support/index.js b/tests/ui/cypress/support/index.js
index 16a28dce..8bc32991 100644
--- a/tests/ui/cypress/support/index.js
+++ b/tests/ui/cypress/support/index.js
@@ -29,10 +29,15 @@
 
 // Define a custom uncaught exception handling policy for Cypress.
 // Returning false prevents Cypress from failing the test.
-Cypress.on('uncaught:exception', (err, runnable) => {
+Cypress.on('uncaught:exception', (err, runnable, promise) => {
     console.log("Krill UI Test: Examining uncaught exception..")
     console.log("Krill UI Test: err: ", err)
 
+    if (promise) {
+        console.log("Krill UI Test: Ignoring unhandled promise rejection.")
+        return false
+    }
+
     if (err.message) {
         if (err.message.includes('ResizeObserver loop limit exceeded')) {
             console.log("Krill UI Test: Ignoring 'ResizeObserver loop limit exceeded' exception")