Here is a discussion with a similar problem:
https://mods.factorio.com/mod/miniloader-redux/discussion/678b100fff66f04e05a9aa1d

There is a problem after starting the save. As it was in THIS post, I have a Smart Inserters mod. But that's not all, I also have the Quick Adjust inserter mod installed, which also upgrades the manipulators. and loaders are no exception, in such a bundle they can be configured without an interface in the world, and when their gui is opened, the layout settings menu in Smart Inserter is displayed. I think they're working together again in the wrong way for these loaders.

The bundle of mods that I use:
https://mods.factorio.com/mod/quick-adjustable-inserters?from=search
https://mods.factorio.com/mod/Smart_Inserters?from=search

There is also a Tenebris mod that creates all the additional bioluminescent versions for this.

Screenshot:

https://drive.google.com/file/d/1AqprgirjqZJV0yEtx209UbGrM2v5yBZb/view?usp=drivesdk

I did what I could.

https://mods.factorio.com/mod/quick-adjustable-inserters/discussion/6821ad6b336383cd298d5d8d

I corrected the wrong link to the correct one, I accidentally copied the wrong one before that.

There are some "inserter modifying mods" that mess up the internal inserters in the miniloaders. Smart inserters fixed this (https://github.com/Wip-Sama/Smart_Inserters/pull/10), I don't know about quick adjustable inserters.

Can you try without that mod loaded? Do you still see the problems?

Actually, the fact is that I added Smart Inserters relatively recently. That's for sure. The problem was even before this mod.

well, as I said, smart inserter is compatible with the miniloaders. Can you try without "Quick adjustable Inserters" ?