I have installed fresh Windows 10 IoT Enterprise LTSC.
Before I explain the situation, just for information, I have another computer with almost the same configuration and same software installed. Also the same Windows version.
Icon which is not displayed is for my music production sound card.
As you can see, the window where should be icon displayed is blank but program is there and running:

I have tried almost all tips, suggestions, tricks which I found on net, but it's always the same.
All other programs I installed when windows starts, icons showed normally, just this one, for music card. And like I said, I have on my other machine the same configuration and works perfectly normal.
Any suggestions maybe what else can I try?