We have updated our Community Code of Conduct. Please read through the new rules for the forum that are an integral part of Paradox Interactive’s User Agreement.
You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
I had this same problem and found it to be set as default to not reinforce. Go into your retinue and try setting it to maximum reinforce. It should solve the problem.
I'm not having any issue with this in the current beta patch (2.2.0.4). As Wodin suggested, double check your reinforce options, to make sure that it's set to reinforce.