Bug summary
Description
While using the self-hosted Prefect UI, I switched to the new UI after seeing the banner prompting me to try it.
After switching, I noticed that one of my deployments was scheduled to run at the wrong time. When I opened the deployment schedule to verify the configuration, I found that the timezone dropdown would not allow me to scroll far enough to select the Asia/Singapore timezone.
Switching back to the previous UI resolved the issue immediately. The old UI allows me to scroll through the full timezone list and select Asia/Singapore without any problems.
Steps to Reproduce
Open the self-hosted Prefect UI.
Switch to the new UI using the banner prompt.
Open a deployment and edit its schedule.
Open the timezone dropdown.
Attempt to scroll to Asia/Singapore.
Expected Behavior
The timezone dropdown should allow scrolling through the complete list of timezones, including Asia/Singapore.
Actual Behavior
The dropdown does not scroll far enough to reach Asia/Singapore, preventing it from being selected.
Workaround
Switch back to the previous (legacy) UI. The timezone dropdown works correctly there.
Environment
Deployment type: Self-hosted Prefect UI
Issue observed only in the new UI
Legacy UI functions correctly
Additional Information
I verified this behavior myself. The problem is reproducible in the new UI but not in the legacy UI. I did not encounter any browser errors or stack traces while reproducing the issue.
Version info
Version: 3.7.8
API version: 0.8.4
Python version: 3.12.0
Git commit: b75c0606
Built: Thu, Jul 09, 2026 09:30 PM
OS/Arch: win32/AMD64
Profile: ephemeral
Server type: server
Pydantic version: 2.13.4
Server:
Database: sqlite
SQLite version: 3.42.0
Additional context
No response
Bug summary
Description
While using the self-hosted Prefect UI, I switched to the new UI after seeing the banner prompting me to try it.
After switching, I noticed that one of my deployments was scheduled to run at the wrong time. When I opened the deployment schedule to verify the configuration, I found that the timezone dropdown would not allow me to scroll far enough to select the Asia/Singapore timezone.
Switching back to the previous UI resolved the issue immediately. The old UI allows me to scroll through the full timezone list and select Asia/Singapore without any problems.
Steps to Reproduce
Open the self-hosted Prefect UI.
Switch to the new UI using the banner prompt.
Open a deployment and edit its schedule.
Open the timezone dropdown.
Attempt to scroll to Asia/Singapore.
Expected Behavior
The timezone dropdown should allow scrolling through the complete list of timezones, including Asia/Singapore.
Actual Behavior
The dropdown does not scroll far enough to reach Asia/Singapore, preventing it from being selected.
Workaround
Switch back to the previous (legacy) UI. The timezone dropdown works correctly there.
Environment
Deployment type: Self-hosted Prefect UI
Issue observed only in the new UI
Legacy UI functions correctly
Additional Information
I verified this behavior myself. The problem is reproducible in the new UI but not in the legacy UI. I did not encounter any browser errors or stack traces while reproducing the issue.
Version info
Additional context
No response