Comment 12 for bug 1812754

If it helps I don't think its specific to using the command line. I'm having the same problem of random blank pages being added using the normal GUI version. I think its a more widespread fundamental problem. This seems to mostly happen when there are a lot of pages and images involved. This is basically the same report I put in here:

https://bugs.documentfoundation.org/show_bug.cgi?id=98698

I'm using:

Libreoffice version:
Version: 6.2.7.1
Build ID: 6.2.7-1
CPU threads: 4; OS: Linux 5.2; UI render: default; VCL: gtk3;
Locale: en-GB (en_GB.UTF-8); UI-Language: en-GB
Calc: threaded

OS: Linux 0 5.2.11-arch1-1-ARCH