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Multi-select date-time filter — timestamp values missing seconds, causing duplicate/indistinguishable entries in the list #4518

@IvaKuklica

Description

@IvaKuklica

Description:

When a user opens the multi-select filter for a date-time field, the list displays all feature timestamps in DD/MM/YYYY HH:MM format. Seconds are truncated from the display.
As a result, multiple features recorded within the same minute appear as identical entries in the list, making it impossible for the user to distinguish between them or make a meaningful selection. This leads to incorrect filtering results, potential unintended data actions, and an unusable list in larger datasets.

Environment

[x ] Staging [x] PROD

Application:

iOS 26.5 / Android 15

Steps to Reproduce:

1. Open project tester-ws-1/preview_mode_bug containing a layer with a date-time type field.
2. Open the Filters panel.
3. Tap on a multi-select filter for a date-time field (Multi-select-POI-date-time filter)
4. Observe the list of values displayed.

Expected Result:

Timestamps are displayed with full precision including seconds (DD/MM/YYYY HH:MM:SS), allowing the user to distinguish between features recorded in the same minute. Selecting a specific timestamp applies the filter only to the exact matching feature(s).

Actual Result:

Timestamps are displayed as DD/MM/YYYY HH:MM only. Multiple features recorded within the same minute appear as duplicate identical entries (e.g., nine entries all showing 27/05/2026 14:35).

This causes the following issues:
1. Incorrect filtering results
When the user selects one of the duplicate entries, it is unclear which record is actually selected — or whether all records sharing that truncated timestamp are selected.
2. Data loss risk during selection
If a user is trying to isolate one specific feature (e.g., to review or edit it), selecting a visually duplicate timestamp may unintentionally include multiple features. In a field data collection context, acting on the wrong feature could lead to incorrect data being modified or submitted.

Attachments:

Screenshot showing duplicate 27/05/2026 14:35 entries in the multi-select list.

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