EDIT: This happened with speed modules as well so I suspect it's actually Module Inserter Simplified. I will report it there instead.
I've found a bug that hyper modules disappear permanently if you select them onto the cursor then CTRL+click a rocket silo.
When I went back to test further one time it did not reproduce, but then getting more and trying again it was reproducible every time whether the rocket silo currently had hypermodules or productivity modules. It hasn't happened when the silo is emptied of modules first.
It doesn't seem to affect other buildings. I do play with a ton of mods (though no overhauls) so there's a chance it's just an incompatibility.
EDIT: This happened with speed modules as well so I suspect it's actually Module Inserter Simplified. I will report it there instead.
I've found a bug that hyper modules disappear permanently if you select them onto the cursor then CTRL+click a rocket silo.
When I went back to test further one time it did not reproduce, but then getting more and trying again it was reproducible every time whether the rocket silo currently had hypermodules or productivity modules. It hasn't happened when the silo is emptied of modules first.
It doesn't seem to affect other buildings. I do play with a ton of mods (though no overhauls) so there's a chance it's just an incompatibility.