OTR-Proxy is a complex intermediate component of KTp, which is not really optional in terms that if you have all dependencies, then it will be a part of the build. The problem that there is a bug in the component and you want to disable it, then you have to break its dependency. Reproducible: Always
Dear user, unfortunately Telepathy is no longer maintained. Please migrate to another solution, e.g. for Jabber a possibility is Kaidan, for Matrix a candidate is NeoChat.