Serious UI Issue with Patch Selection in Omnisphere 3

[Marsin Na]

Hi,
after upgrading from Omnisphere 2 to 3, I’m getting a strange UI issue in SONAR 8.5 and I’m wondering if anyone else has seen this.

✅ Symptoms (short version)

Mini Browser doesn’t show patches after selecting Directory/Category

Clicking a patch changes the sound, but the patch name doesn’t update

Mouse scroll stops working completely

Only the up/down arrows in the Mini Browser work

Full Browser still works

Everything else (knobs, filters, envelopes, FX, audio) is normal.

✅ Important clue

The issue starts right after I close the UI window of any Omnisphere 3 instance.
It doesn’t matter if I have 1 instance or 6 — closing one window seems to trigger it.

Sometimes everything works perfectly with multiple instances.
Other times it breaks immediately.

✅ My setup

SONAR 8.5

Windows 10

Omnisphere 3 (clean install, authorized)

Omnisphere 2 had zero issues in the exact same setup

✅ Question

Has anyone using SONAR 8.5 seen similar VST UI issues with Omnisphere 3 or other plugins?
Is this a known VST2 event-handling limitation in SONAR, or something that can be worked around?

Thanks!