Weird. I will find Windows 10 PC and test.
Btw, let's create some custom skins!
I made very simple tool pack to do it:
http://clusterrr.com/soft/nes_mini_skin_hack.zip
How to use:
1. Make sure that you are using hakchi2
v2.14 or newer, install custom kernel using it.
2. Close hakchi2
3. Run "
fetch_original_skin.bat", it will download original skin from your NES Mini (you connected it to PC already, right?).
4. Edit "
nes.png" file with your favorite graphics editor (but not with mspaint, it doesn't support transparency)
5. Run "
make_skin_mod.bat", it will create your "
skin_hack.hmod" skin mod.
6. Run hakchi2 and just drag-and-drop this "
skin_hack.hmod" file to it. Install your skin.
7. Enjoy!