Protein structure derived annotation tracks not available as reference annotation unless 'add to alignment' preference is enabled

The Structures preferences has two sets of options relevant for protein secondary structure display - 1) process 3D structure data and 2) add secondary structure/temp factor

If 'process structure' is enabled but neither of 'add ...' then the expected behaviour is that the structures are processed to generate annotation, but the annotation rows are not added automatically to the alignment view. They can be made visible, however, via the 'Add reference annotations' option.

In Jalview 2.10.5 (and perhaps 2.10.4?), enabling 'Process structure' does not result in any reference annotation being generated. Enabling 'Add ...' does cause the 'Add reference annotations' option to be enabled - and contrary to docs, no annotation is automatically added to the alignment.