When line spacing is non-zero, empty lines have zero height
The title describes the problem. It can easily be reproduced in pango-view.
Take for example this file, save it as Test.txt
and run
pango-view Test.txt --line-spacing=1.0 & pango-view Test.txt
Then you only see empty lines in the second view:
This can't be right, can it? The pango version I am using (on Ubuntu 20.04) is 1.44.7-2ubuntu4 (according to the Synaptic package manager)