[Vibraphon]

... The abc files I'm testing with expand to use the entire width of the application window. So I'm not sure what's going on there unless you are overriding the page size or the abc page size. That is with standalone abc files though. I just copied the abc block from Vibraphon's file into my own ChordPro file though, and the sheet music takes up the entire application window for me on Windows. So I need to know - are you setting the page size explicitly?

Mike

Sorry Mike, I forgot to answer your question.

I have attched two pictures (landscape and portait mode) of the same file used on my surface pro 8 (WIN 11) with screen resolution 2880 x 1920. In mobilesheets (now [v3.9.12]) I am using the default settings.

For this test I have removed all my %%scale, %%font and so on entries.
If you want, I can sent you the pro-file via mail. I do not want to attach it due to legal restrictions.