App ignores the "descending" order for a date/time field of a child table

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#4,642 opened on Aug 10, 2026 1 comment 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 3/5
Estimated time: 1-2 days
Newbie friendliness: 50/100

Issue type: Bug
Clarity: Mostly clear
Activity status: Quiet
Tech stack: android, cpp
Domain: mobile

Research direction

Start by reproducing the reported QGIS relation with a date/time field configured for descending child-record order on Android 16, then compare the result with QGIS Desktop. Trace how the mobile app reads and applies the relation ordering; done means child records follow the configured descending date/time order.

Written by the indexing model from the issue text.

Description

bug forms

Description
In a QGIS relation, the child records/features are set to be shown in a descending manner, using a date/time field and in QGIS Desktop this works ok

Not so much in MM App, where the order seems to be always ascending

Application (+ app version, build, operating system)
2026.3.2 Android 16

Steps to reproduce
See above

Expected results
MM App to behave as QGIS Desktop.

Dominant language: C++
Stars: 388
Forks: 87
Avg merge: 4d 1h
Merged PRs (30d): 23

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