Issue with std::optional<Opaque*>

[CalaveraLoco]

Hello,

I feel out of my depth with this issue. I can work around it but it got me curious what causes it.
I have an opaque type and a couple of functions that use it on the C++ side.
They seem work fine when I have:

do_something1(Opaque_t x)
do_something2(Opaque_t* x)

even if I use:

do_something3(std::optional<Opaque_t> x)

but when I get to this:

do_something4(std::optional<Opaque_t*> x)

The fields of (*x) (within do_something4) seems to be random numbers.

What am I missing to be able to use this last option or is it working as intended or a known limitation?

ps.:I tried to search for similar topics but nothing came up anyway sorry if this is end up as a duplicate.