Talk:Excalibur/@comment-121.211.119.200-20180712124042

Unlike other Warframes, Umbra cannot be affected by it's own Operator's Protective Dash from the Vazarin Focus school. This is likely related to its sentience during Transference.
 * Possibly related is the fact that Umbra's Operator's Protective Dash can affect their own Companion. This is not the case for other Warframes.

This was a bug, they purposly made vazarin able to heal specters, defense objectives and such, I don't see what people got wrong about posting this in the wiki. As of Update 23.0.8 this has been fixed and classified as a bug. The protective dash will work on anything regardless of frame choice.