I appreciate the recommendation for SysTrayIconsManage. It is certainly a workaround
Does Ath's workaround work for you?
I hope skwire can figure out how to solve the tray issue.
Unfortunately, I do not know how to fix it. I've researched, tried a few things that didn't work, and put it aside. I realise that seems terribly apathetic, but please understand that I write freeware simply as a hobby when I have spare time. Moreover, I don't use the Windows "hide icons" feature. That is, I enable the "Always show all icons and notifications on the taskbar" option and use PS Tray Factory
to manage tray icons instead.