Not seeing drum/synth presets properly. Anyone else have this problem?

I’m new to the OP-1, just received my Field unit a week ago. I have a strange issue when it comes to selecting presets for drums and synths.

When I select Drum/Synth + T1 to view the presets, not all of the subcategory lists are showing. For example the dbox drum kits don’t show. However if I select Shift + 1 it will show the list. Same thing happens with the synth engines, I don’t see the sublists of option from each root engine unless I navigate through Shift + 1.

Is this a known issue or am I doing something wrong or missing something here?

Its not an issue, its a feature.
When using Shift+1 you are changing the complete instrument. So synth engine + envelope + effect + lfo = preset seen in the subcategories.
When using Shift+T1 you only swap the synth engine. Env, fx and lfo don’t change. Therefore the subcategories dont make sense.