I have found this problem both with my widget and my stand-alone desktop version (v1.3.4). When you zoom in to certain areas of the map, such as the one shown, the border disappears. It seems to be the borders with the largest number of data points. This does not happen in the flat map views.
Steps to Reproduce:
1. Open Marble Desktop 1.3.4, Globe view, plain map
2. Zoom into a large border, such as the one north of Mongolia (picture)
3. At close enough level, border disappears
Border does not disappear
Created attachment 74325 [details]
Attaching the linked image to ensure it'll be accessible in the future.
Marble 1.4.1. is available for download, can you try whether the problem is fixed in there already? http://files.kde.org/marble/downloads/windows/marble-setup-1.4.1.exe
Yes. I was able to recreate the same problem with 1.4.1 version as well. I am using v0.12 as the source code, and have same problem with my application
Git commit 51e4ce5588e9d3bd59c1c8c707aa22086a25823f by Thibaut Gridel.
Committed on 03/01/2014 at 19:32.
Pushed by tgridel into branch 'master'.
The following patches remove the legacy drawing code used by so-called
vector map themes, which use data sets as their base for display.
Now, all rendering is done with the unified geodata framework.
Related: bug 244025
M +17 -17 data/maps/earth/plain/plain.dgml
M +39 -35 data/maps/earth/srtm/srtm.dgml
M +1 -1 data/maps/earth/temp-july/temp-july.dgml