Hi,
last week I upgraded my system: Instead of 1 4K and 1 Full HD monitor I now have 2 4K monitors. I often use RIOT to scale down photos that I send someone. Awful! Instesd of 9 MB (DSLR) I get down to 900 KB (scaled down to 50%; still enough)
Yesterday I tried again. No luck. RIOT starts, but the Windows does not show up.
I tried all the tricks with "getting back off-screen Windows" but nothing worked.
I uninstalled RIOT and re-installed it - no luck.
Only when I changed the resolution of 1 screen back to Full HD the window showed up.
Then I also could move it to the second (4K screen).
Looks very much like a bug....
Axel