Something seems to be wrong with the layout manager/export function, leading to some weird error that it misses exactly one line string (in this case: the number "6") in the finished PDF/picture. Tried various possible fixes, playing around with the settings in producing the PDF, exporting as picture, but to no avail. Any ideas what could be wrong here?
E: Using a larger offset was the solution!
Visible in layout manager:
The finished PDF or picture:
Label settings atm:
I think the offset of 0.1 millimeters that you are using at the moment might be too small, I tried with a random set of polygons using "Outside Polygons" as a Mode and 0.1 millimeters as the distance the same way you did and half of the polygon IDs (polygons with labels "1", "4" and "6" out of 7 in total) didn't show on the exported PDF map. I tried again with a distance of 1 millimeter and all polygon IDs now appear on the final map. Does that work for you using a bigger distance?
