Using PlantUML version 1.2022.2 and this source:
I get correctly generated PNG file. But EPS file looks ugly and unreadable:https://www.dropbox.com/s/6oi9tqzcom8tug9/eps.png
Generated EPS file is here: https://www.dropbox.com/s/wtuwnyuhj7nidac/test.eps
Attempt to use "!theme" directive doesn't help much. Only "!theme plain" works fine.