The checklist in notes is no longer showing when using Windows 10 and Google Chrome (Latest Version), Microsoft Edge or Firefox. I opened a support case with Apple and provided logs; Apple will follow up with me on Monday. In the meantime, using a Google Chrome portable version (older build) as a work around. Share any other work arounds if you find them.
[Re-Titled by Moderator]
Spoke with Apple Support again today.
Icloud.com engineers are reviewing the logs but don't have an ETA.
Apple Support will email a status update next week.
Chrome updated to Version 136.0.7103.25 and is working now but would be nice to have iCloud.com fix the core issue (assuming it's on their end) to prevent the issue from returning with future chrome builds.
The previous Chrome Version 135.0.7049.85 still has the issue indicating iCloud.com never changed anything to resolve the issue and a Chrome update indirectly fixed the issue but likely not a long term reliable solution.
Firefox has the issue with the black checkboxes for checklist items which was reported in November.
Based on the notes in the bug report above, in that Bugzilla thread, Mozilla engineers have identified the issue as being caused by how iCloud.com is written. Mozilla is waiting for iCloud to resolve the issue.
Round 2 of logs today as additional logs were needed, next update on Wednesday 4-16-25
I have just raised a similar support ticket. Can you let me know how you get on. Thanks :-)
Spoke with Apple support again today, developers are aware of the issue and are working on a fix. There will be no future updates until the issue is resolved.
Why is my iCloud checklist not showing in browsers on Windows 10?
