Issue Summary

No Validation of Date field value entered under Board->Release page–>Start date causes failure in loading of plans.

Steps to Reproduce

1. Create a Plan With Project / board as Input source
2. Edit the start Date and Release Date with 15/Apr/26 and 28/Apr/26 respectively instead of 15/Apr/2026 under Board->Release page–>Start date/Release Date
3. Save it now navigate to the plan.

Expected Results

The Plan should be displayed and not fail 

Actual Results

The below exception is thrown in the UI and Console log:

Stack TraceUncaught RangeError: Invalid time value

RangeError: Invalid time value
    at t.default (https://linux-124185.prod.atl-cd.net/jira/s/9467238d80d3bff703f82b54eb3275f4-CDN/-mbg2fw/11030005/1bqcfwe/11.3.4/_/download/batch/com.atlassian.jpo:entrypoint-app-simple-plans/com.atlassian.jpo:entrypoint-app-simple-plans.js?locale=en-US:50:223599)
    at https://linux-124185.prod.atl-cd.net/jira/s/9467238d80d3bff703f82b54eb3275f4-CDN/-mbg2fw/11030005/1bqcfwe/11.3.4/_/download/batch/com.atlassian.jpo:entrypoint-app-simple-plans/com.atlassian.jpo:entrypoint-app-simple- 

Workaround

Change the DateFormat as desired under Advanced settings or remove the board from the input source of the plan by directly access the url (modify the baseURL and parameter values as per your plan)

https://<BASE_URL>secure/PortfolioPlanView.jspa?id=1&sid=1&vid=2#settings/scheduling

Or Address the affected board/release.

1. Open the affected Board and navigate to the Release page.
2. Edit the Releases for the project.
3. Update both the Start date and End date using the Date Picker, or manually enter the dates in the format dd/MMM/yyyy .
4. Avoid copying and pasting dates in the older dd/MMM/yy format, as Jira may not show a validation error but the invalid value can later cause the Advanced Roadmaps Plan View to fail.
5. Save the Release changes.
6. Refresh the Advanced Roadmaps Plan View and confirm that the error no longer appears.
If multiple Releases were created or updated using the older date format, please review and update each affected Release date to the new dd/MMM/yyyy format.