Trying to rename a business process in the process modeler and getting this error:

PATCH http://formsserver/Forms/webapi/v1/businessprocess/17?skipErrMsg=true 400 (Bad request: request method denied)
TypeError: Cannot read property '0' of undefined
    at bpedittitle?v=SUkRkB8SYFFzjV9FpttIqceYD3LmmCHw-K-dakv6ug41:1
    at ng?v=lHfvhGzMNkPE9PvwgFQLElsL0p6Xf9OSkeK_sGqkdNU1:1
    at a (ng?v=lHfvhGzMNkPE9PvwgFQLElsL0p6Xf9OSkeK_sGqkdNU1:1)
    at a (ng?v=lHfvhGzMNkPE9PvwgFQLElsL0p6Xf9OSkeK_sGqkdNU1:1)
    at a (ng?v=lHfvhGzMNkPE9PvwgFQLElsL0p6Xf9OSkeK_sGqkdNU1:1)
    at ng?v=lHfvhGzMNkPE9PvwgFQLElsL0p6Xf9OSkeK_sGqkdNU1:1
    at l.$eval (ng?v=lHfvhGzMNkPE9PvwgFQLElsL0p6Xf9OSkeK_sGqkdNU1:1)
    at l.$digest (ng?v=lHfvhGzMNkPE9PvwgFQLElsL0p6Xf9OSkeK_sGqkdNU1:1)
    at l.$apply (ng?v=lHfvhGzMNkPE9PvwgFQLElsL0p6Xf9OSkeK_sGqkdNU1:1)
    at k (ng?v=lHfvhGzMNkPE9PvwgFQLElsL0p6Xf9OSkeK_sGqkdNU1:1)

Happens both on Chrome and IE. Haven't tried Firefox but I don't think this is a browser issue anyway.

Forms 9.2.1