Saving Layer Theme discards subgroup selection

[qgib]

Author Name: Charl Jooste (Charl Jooste)
Original Redmine Issue: 21508
Affected QGIS version: 3.6.0
Redmine category:symbology

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When you save layer themes have groups with layers that have been selectively activated within subgroups.

If you save the layer theme and load it again, all the selections in a subgroup will be switched off if the parent group was switched off.

It should save the state of each layer in the subgroups (or nested groups if applicable) as well.

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• category_id was changed from Data Source Manager to Symbology

[Pedro-Murteira]

This is still true on QGIS 3.16.15 and 3.22.2.