First of all, thank you for still supporting WiiFlow, i've been using it for years and I'm happy to see it still getting new features and improvements!
However, I encountered a couple of problems with the latest version (v5.1.0).
I opted for the "as wiiflow" version because this saved me the hassle of installing a bunch of new forwarder channels and I also set up bootmii to autoboot into WiiFlow. Unfortunately, the "Return to Channel" option doesn't seem to work with this version (and the original forwarder/hidden channels in place) as it would just boot the system menu no matter what.
When using the Classic Controller's left stick to manipulate the cursor, it sometimes moves erratically in the opposite direction of the actual input (the cursor will move up when the stick is pushed down, for example). This seems to only affect the Y-axis (the down input in particular) and only when the stick is moved all the way in one direction.
Keep up the good work!