This should not affect manual sending, this was intended only for mixing.. but such coincidence is strange - will look into it.I believe this is actually deliberate to protect masternodes but I think it needs refining and should only apply if there are masternode settings in the config file etc.
See here --> https://darkcointalk.org/threads/v0-11-1-x-instantx-release-testing.3826/page-26#post-40515