If you look at the G-Code you posted in Creator's built-in Previewer, you can see that there are clearly infill segments that should be printed in that area. The program appears to be calculating the correct toolpaths, which suggests this might be a mechanical issue.
What printer are you using? Any chance you need to adjust the tensioning on your extruder? Those are the longest segments of that layer so maybe it is slipping at the same point due to the increased acceleration at those locations. The first layer is typically printed slower so you wouldn't see it there. You might also just be trying to print too fast. There are typically limits for how fast an extruder can push plastic out before it starts to slip. If adjusting the tension on the extruder doesn't help, you could also try decreasing your printing speed by 10% and see if that helps.