Issues, Workarounds & Localization

I have recently encountered times when trying to load stuff into the cargo hold of an active ship it tells me I don't have enough space and that the cargo hold is overloaded.

I check and there is heaps of room left to hold the new cargo.

It occurs from what I can work out, when there is already a type of the same cargo in the hold eg Trit.

The only way to load it is to take out the current item, stack them in my hangar and then reload the entire stack.