@d-healey

In case anyone else should ever run into this problem here is the solution (I'm kicking myself).

The Expansion Selector has to be higher than the sample map selector in the UI tree.
That's it.

That's why the minimal project worked, and that change seems to have completely fixed it in my main project.

Thanks again for all your help. Hopefully this will help someone in the future!

@Elezeid

Identified and fixed (sort of 😂)

Combo box with script swaps between factory and expansion content Combo box saves in preset Changing presets seems to re-trigger the combo box's value, even if it's the same as the previous preset, which initializes the expansion content and bumps the scroll window back to the top

Fix: Turn off "save in preset" for the combo box.

Voila! Bug gone. This is a slightly less than ideal way to browse content, as the user will have to manually swap content libraries via the combo box, but it is a small inconvenience when compared to the joy of browsing presets.

Hope this helps anyone else that runs into the issue in the future!

@AbidextrousMoose thanks for a detailed report!

We fixed all of this by including the ConvolutionIR itself in the preset.

Do you mean by including an Audio Waveform UI element and pointing it to the IR slot?

@Christoph-Hart did you have a chance to look into it?

@aaronventure This is great advice. I've actually been using git to backup my project after every session, but I'm fairly new to using it so I didn't realize I could revert to a previous version.

Thanks for pointing this out (and for the other user who mentioned this). I appreciate the guidance!