Currently 3 issues where the used cargo capacity versus max capacity isn't represented correctly:

Issue 1:
Slab blocks count as "full" blocks. In this example I have 5 cargo blocks, since each cargo block can have 4 different sizes, the representation changes every 5% capacity.
However, since slabs count as full blocks, it only changes for every 20% capacity.

Example: 99% capacity for 5 cargo blocks

Example: 79% capacity for 5 cargo blocks

In both cases the amount of cargo blocks used is correct:

• 99% capacity is between 80 and 100 so 5 out of 5 are used.
• 79% capacity is between 60 and 80 so 4 out of 5 are used.

Visually though, 99% capacity shows 2 full blocks which is 40% capacity. 79% capacity shows 1.5 full blocks so 30% capacity.

Issue 2: Reaching exactly 100% capacity with 2 or more stacks seems to count as 99.99999%
Example:

Versus

Issue 3: using multiple cargo groups uses each groups own capacity to fill, and not the total capacity.

Example: 2 cargo groups, each group has 100 capacity but 200 total.

As you can see, both groups appear full even though I only use 50% capacity. That's because it uses the wrong current capacity per group.