Comment # 16 on bug 1203458 from Daniel Scott

I ran virt-manager using the suggested su - from a terminal. After connecting,
I launched my virtual machine and the usual shutdown occurred. However I found
the following in the terminal:

libsoup-ERROR **: 14:13:06.377: libsoup3 symbols detected. Using libsoup2 and
libsoup3 in the same process is not supported.

I tried to uninstall libsoup3 directly, but ran into a bunch of problems that
needed to be solved, primarily with yelp. So I uninstalled yelp, which allowed
me to uninstall libsoup3, which allowed me to run my VM using virt-manager,
both as root and then as user.

I have marked libsoup3 as taboo and was able to execute a zypper dup without
issue. I am not sure what has caused this situation, but it appears to have
fixed my problem.