Comment # 1 on bug 1158702 from Arnav Singh

You may want to report this against
https://build.opensuse.org/package/show/devel:languages:lua/lua-lua-mpris which
is the source of the mpv-plugin-mpris package. For example, the fact that Lua
numbers are implicitly doubles is the reason for the "Position is d but should
be x" message. I'm not familiar enough with the lua mpris library that it uses
to know if there's a way to fix these type issues.

A more immediate resolution could be to switch to the plugin at [1]. This one
is written in C and uses GDBus, and uses the right types.

[1]: https://github.com/hoyon/mpv-mpris