When using cursor left & right or category+/-, if you end up in an empty category (like a parent) nothing happens

[esaruoho]

I opened a ticket about this ages ago, because it occurred with the +/-, but now i got it replicated with cursor keys left and right.

Steps to replicate:

1. Go to ZooZither 3 - zzsurge_Brainstem ( this is the last "factory" preset before the user presets start )
2. Press the Right cursor key.

Expected result:
You are now in 3rdparty/Analog Monsters - BRASSY. (the first user preset category preset)

Current result:
Nothing happens.
Press Right cursor key again. You are now in 3rdparty/Analog Monsters - BRASSY.

Now press left cursor once.
Expected result:
You are in ZooZither 3 - zzsurge_Brainstem. (the last library preset category preset)

Current result:
Nothing happens.
Press Right cursor again -and you are now in ZooZither 3 - zzsurge_Brainstem

[esaruoho]

here's the culprit "line".

[esaruoho]

This "transcend the boundary" bug does not appear when in Factory Wind category and getting to Argitoth.. Only when crossing from factory3rdparty to "userpresets"

[esaruoho]

And the same issue will occur when at "wavetables" or "last userpreset category" and pressing right once = doesn't go to Bass. Press right another time = does go to bass.

[esaruoho]

Another addition: When you are in the same place (Zoozither) and press Category + - nothing happens. Press Category + again, and you will be in the first user-preset folder's first preset.

Same twice happens when you press Category - - need to press it twice to transcend the boundary.

[baconpaul]

The problem here is pressing "+" into a category which has children. So if your categories look like

zither
nested
nested/foo
nested/bar

(which they do) but nested contains no patches you end up with this behaviour

The fix is to skip patch-free categories in +/-

That's a bit tricky - won't do it right now i don't think

thanks @esaruoho good catch!