problem calling template function defined in module

Question

I was unable to make a minimal working example. I hope this suffices. If not, please let me know what other information is helpful.

In a module called unit_spatial.ixx I have the following snippet:

template <typename RTree, typename Geometry>
inline auto k_within(RTree const &map, Geometry const &geometry, float radius, unsigned k = std::numeric_limits<int>::max()) {
    auto nearest = std::ranges::subrange(map.qbegin(bgi::nearest(geometry, k)), map.qend()); // compiler doesn't complain about this
    auto f       = std::ranges::views::filter( is_within(geometry, radius));   // compiler ok with this
    auto g       = std::ranges::views::take_while(is_within(geometry, radius)); // compiler ok with this too
    //return nearest | f;  // client would compile if I used f
    return nearest | g;  // fails to compile a client calling this function: fatal error C1116: unrecoverable error importing module 'unit_spatial'
}

In the client I have imported unit_spatial and have the following snippet

// ....
        Point2D origin(0, 0);
        UnitMap map(us.begin(), us.end());                  // create packed map
        auto    rng = k_within(map, origin, 5.0f, 100);  // (1) search 100 units for those within radius <= 5; Fails as described above

I'm using boost geometry for my RTree and MS STL library on VS 2022 preview 7. Apart from noticing the different signatures of std::ranges::views::filter and std::ranges::views::take_while, I can't figure out how this could be.
Also, If I call the std::ranges::views::take_while(is_within(geometry, radius)) from the client that works too. It only fails when I call into a module that tries the same thing.
The compiler error is uninformative to me:

on line (1). fatal error C1116: unrecoverable error importing module 'unit_spatial'