hyperland itself told me that, I have a terrible picture (I didn't setup screenshots lol) of it: https://imgur.com/a/fWwmt1e
This was right before yuzu closed down btw.
and have none of the problems you mentioned.
You can move floating windows between displays with the move left/right commands? (not the move to workspace commands).
edit: Found a related issue https://github.com/hyprwm/hyprland-wiki/issues/242
I didn't say that it is impossible to do it, just that after I read the documentation it told me that.
Something that I couldn't even find in the documentation was how to do several actions with one keybind, on i3 each action is separated by a comma and you can assign variables to them, for example:
$BIND $MOD+$SHFT+Mod2+KP_1 $MVTO $WS1, $WS1, $WDUNST "$WS1"
Which means:
bindsym Mod4+Shift+Mod2+KP_1 move container to WorkSpace "1", WorkSpace "1", --no-startup-id dunstify -r 33 -t 600 "$WS1"
In english that is move the focused window to workspace 1, focus workspace 1 and send a notification of the current workspace (the last one is for some visual feedback).