I don't know anything about this CAD package, but it looks like the parts that are green have smaller gaps between the copper areas which may be violating a design rule. You may need to adjust the rules or the gaps.
Absolutely agree there. From the visual it looks like there is very little gap between copper pads. I would look at the manufacturer's recommended footprint, or better the IPC-7351 footprint, and check dimensions.
Also, websites like Digikey can often link to 3rd party footprints such as SNAPEDA that are starting points for standard packages.
The default rules for CircuitStudio are just that, defaults. I think they might be a generous 10 mil spacing if I recall. These can be changed in CircuitStudio to a more typical spacing rule for most modern PCB fabricators capability. You would need to check on-line with some fabrication vendors for their standard (that is,no-extra cost) dimensions to be certain. Often 6 mil gaps are easy for them to do without extra cost and going smaller features may add an extra charge. Don't make the features (e.g. spaces) smaller than they need to be. Instead use the IPC-7351 footprints typical for normal manufacturing.
