I run Windows Server with multiple VMs. I have 4 monitors. I run GotoMeeting & DisplayFusion Pro on the primary server. I've enabled the shortcut key & button for "Windows On Top" function, which always appears adjacent to the default "Move Window to Next Monitor" button on every window.

Whenever I pin a Notepad it stays on top when I remote into one my VMs helping me use the rest of the monitors in my VM (even though I use the default Remote Desktop settings that makes the VM use ALL 4 monitors, I don't mind relinquishing a monitor completely to the host computer since I use DisplayFusion Pro on the other VM as well & unearthing a hidden window is just a keystroke away).

The only window that's an exception is the GTM viewer. It wouldn't stay on top even if it's in a Window mode (as opposed to fullscreen mode). This one Window kills my productivity like nothing does. I've lived with this problem long enough that I couldn't take it anymore. Please help.

PS:
The attachment shows how a notepad pinned by DF Pro indicates that it's been pinned with a visual cue (button is toggled & shown selected in blue). The GTM viewer on the other hand is not pinned.