Over the last couple of weeks I noticed that some icons for applications were not displaying properly (blank icons) on the secondary monitor taskbar. I thought that I would reboot this morning to see if that resolved anything but it did not. I honestly don't know when exactly it quit working properly. Any ideas? I'll attach a screenshot. The first icon shown is Excel when moved to the secondary screen.

If you shutdown DisplayFusion can you see them?

Yes, if shutdown DisplayFusion and turn on the built in Windows 10 multidisplay taskbars it does show there. Actually until now, I didn't realize that you could set the built in taskbar to only dispaly active apps where the window was opened. That is a good solution for me but doesn't explain why DisplayFusion's taskbar on the secondary doesn't display properly. Again not a big issue now that I realized Windows 10 has this built in.

9.6B1 did resolve this issue! Thanks!

Wondering if there's an ETA for official fix release (non-beta)?
Experiencing same issue, specifically with MS Office icons.

Upgraded to latest Office and this is no longer an issue, all icons are showing up.

I'm still having this issues using version 9.7.1. Any thoughts on how to fix this?

Never mind. I finally found the windows fix @ https://helpdeskgeek.com/windows-10/how-to-fix-system-tray-or-icons-missing-in-windows-10/