"Riešenia zostáv úloh" does not show contents of the file

[pavelpetrovic]

The interactive interface for grading submissions sometimes fails to show the contents
of a text file. I do not know why, it may have something with the encoding to do,
but this is really uncomfortable, when it needs to be downloaded, unzipped, and
viewed in a local viewer. Attached is an example of such zip-file with a text file.
AdrianKyska_1.zip