Bug - soffice.bin taking 100% cpu - Is this a bug?

We are using RHEL 7.5 64-bit for our Moodle LMS application.

We installed a unoconv as per their instructions.

https://docs.moodle.org/34/en/Universal_Office_Converter_(unoconv)#CentOS_.2F_RedHat

Over the last few days, we noticed 100% CPU resources so high that it locks up everything and makes the application useless.

We tried the fixed to not load the logo upon start up and restarted the unoconv service, it seem to work for a few days, it came up again.

I was told it was bug with this program. We cannot remove -gtk* as one of the dependencies we need, libreoffice-pyuno would be removed.

The server does not need graphical interface.

When will this bug be fixed?