cache-size property bug

[Argon-]

Pressing repeatedly

CTRL+DOWN  add cache-size 0 ; show_text "Cache Size: ${cache-size}" ; print-text "Cache Size: ${cache-size}

when executing mpv with --no-config --input-conf=~/.mpv/input.conf --pause --cache=yes will result in an increased cache size.
Here's the verbose output when simply issuing the above keybinding multiple times in a row and nothing else.

It's the same for negative numbers and I believe these used to work once as I have keybindings to in- and decrease cache size and successfully used them at least once. I don't remember when it broke though since I never really used these keybindings...