Value relation entries beyond 10k cannot be selected

[uclaros]

On a value relation field with > 10000 entries, only the first 10k are selectable. Entries beyond the 10k mark can be searched but once selected they are not stored.

It seems that two different models are used for populating the list / searching and for fetching the selected key with convertToKey(), so the second one only contains the default first 10k entries.

[ValentinBuira]

I tried to replicate the issue setup in a public project at solar panel workspace cop/10k_relation_issue

But I could not reproduce the issue because as soon as I open the parent form the app become completely unresponsive

[robinbonnefoy]

I observe that the bug is still present in the latest version of Mergin Maps (2025.1.1). Is it planned to be fixed?

[fernandinand]

Another user reported this with tables from scientific species names