Screen Recording 2026-05-20 141612.mp4

Steps to reproduce:

1. Create a new trigger in a host where at least 1 item exists
2. Fill name, click Add near Expression field
3. In the Condition popup, select the nodata() function, any item, in Last of (T) enter '5m', in Mode enter 'strict', Result can remain default
4. Insert the Condition
5. Click on Expression constructor, click on the just entered expression, click Edit
6. Observe the Condition popup with just entered values is opened

Result: value 'strict' has disappeared from field Mode, instead there is 5m and an inline error message "This value must be one of "", "strict".".
Expected: in Mode field value 'strict' is present.