I thought I'd reinstall Display Fusion again and see if any of the issues have been resolved. While most of them seem to be better, there are still some issues with Window Snapping.

If I have DF taskbar enabled, when trying to snap multiple windows of windows explorer, it only shows 1 window. If I disable DF taskbar, then all instances of windows explorer show. Is anyone else seeing this?

Their description is unclear, but I believe they mean the native Microsoft window snapping, not the DisplayFusion "Window Snapping". If the Microsoft one has an official name, I'm unaware.

If you drag a window to near the top of the screen or mouse-hover the maximize button of a window, it gives you arrangements to snap the windows into. However, Windows only appears to be able to do this with windows that appear on the taskbar. When DisplayFusion creates a second taskbar and moves entries to that 3rd party one, those windows are not available to snap into these layouts because they are not on the Microsoft taskbar.

Although this explanation doesn't 100% fit their description either... if you start with one explorer window, the others will not be available. If you start with a different window, none of the explorer windows would be available if they are on the DF handled screen.