Hi Isomorphic,
answering in this thread and clicking through the SmartClient SDK Change Log (ISC_141_BRANCH_2025-03-13_1741843396_jenkins_node2), I noticed that there might be a bug with grouped ListGrids. Above link opens the changes for v12.1. If you close all the groups in the "Bux fixes and other changes" section, it looks like this:

As you can see some groups are doubled. This also happens if you select the v13.1 changes.
Best regards
Blama
answering in this thread and clicking through the SmartClient SDK Change Log (ISC_141_BRANCH_2025-03-13_1741843396_jenkins_node2), I noticed that there might be a bug with grouped ListGrids. Above link opens the changes for v12.1. If you close all the groups in the "Bux fixes and other changes" section, it looks like this:
As you can see some groups are doubled. This also happens if you select the v13.1 changes.
Best regards
Blama